fix missing

2024/gareth/day07/day07.go

@@ -0,0 +1,90 @@
+package day07
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func Part1(input string) int {
+	total := 0
+	lines := strings.Split(strings.TrimSpace(input), "\n")
+
+	for i := 0; i < len(lines); i++ {
+		target, numbers := parseLine(lines[i])
+		if validLinePart1(numbers, 1, numbers[0], target) {
+			total += target
+		}
+	}
+
+	return total
+}
+
+func Part2(input string) int {
+	total := 0
+	lines := strings.Split(strings.TrimSpace(input), "\n")
+
+	for i := 0; i < len(lines); i++ {
+		target, numbers := parseLine(lines[i])
+		if validLinePart2(numbers, 1, numbers[0], target) {
+			total += target
+		}
+	}
+
+	return total
+}
+
+func parseLine(line string) (int, []int) {
+	parts := strings.Split(line, ":")
+	target, _ := strconv.Atoi(strings.TrimSpace(parts[0]))
+	numberStrings := strings.Fields(parts[1])
+
+	numbers := make([]int, len(numberStrings))
+	for i := 0; i < len(numberStrings); i++ {
+		numbers[i], _ = strconv.Atoi(strings.TrimSpace(numberStrings[i]))
+	}
+
+	return target, numbers
+}
+
+func validLinePart1(numbers []int, index int, currentValue int, target int) bool {
+	if index == len(numbers) {
+		return currentValue == target
+	}
+
+	sum := currentValue + numbers[index]
+	if validLinePart1(numbers, index+1, sum, target) {
+		return true
+	}
+
+	product := currentValue * numbers[index]
+	if validLinePart1(numbers, index+1, product, target) {
+		return true
+	}
+
+	return false
+}
+
+func validLinePart2(numbers []int, index int, currentValue int, target int) bool {
+	if index == len(numbers) {
+		return currentValue == target
+	}
+
+	sum := currentValue + numbers[index]
+	if validLinePart2(numbers, index+1, sum, target) {
+		return true
+	}
+
+	product := currentValue * numbers[index]
+	if validLinePart2(numbers, index+1, product, target) {
+		return true
+	}
+
+	// Turns 12 || 34 into 1234
+	concatenated, _ := strconv.Atoi(strings.TrimSpace(fmt.Sprintf("%d%d", currentValue, numbers[index])))
+	if validLinePart2(numbers, index+1, concatenated, target) {
+		return true
+	}
+
+	return false
+}

2024/gareth/day07/day07_test.go

@@ -0,0 +1,33 @@
+package day07
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`190: 10 19
+3267: 81 40 27
+83: 17 5
+156: 15 6
+7290: 6 8 6 15
+161011: 16 10 13
+192: 17 8 14
+21037: 9 7 18 13
+292: 11 6 16 20`)
+	assert.Equal(t, 3749, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`190: 10 19
+3267: 81 40 27
+83: 17 5
+156: 15 6
+7290: 6 8 6 15
+161011: 16 10 13
+192: 17 8 14
+21037: 9 7 18 13
+292: 11 6 16 20`)
+	assert.Equal(t, 11387, r)
+}

2024/gareth/day07/input.txt

@@ -0,0 +1,850 @@
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2024/gareth/day08/day08.go

@@ -0,0 +1,80 @@
+package day08
+
+import (
+	"math"
+	"strings"
+)
+
+type Coordinate struct {
+	Row int
+	Col int
+}
+
+func Part1(input string) int {
+	grid, antennaMap := parseInput(input)
+	result := findAntinodes(grid, antennaMap, true)
+	return result
+}
+
+func Part2(input string) int {
+	grid, antennaMap := parseInput(input)
+	result := findAntinodes(grid, antennaMap, false)
+	return result
+}
+
+func parseInput(input string) ([][]rune, map[rune][]Coordinate) {
+	lines := strings.Split(input, "\n")
+	rowCount := len(lines)
+	colCount := len(lines[0])
+	grid := make([][]rune, rowCount)
+	antennaMap := make(map[rune][]Coordinate)
+
+	for row := 0; row < rowCount; row++ {
+		grid[row] = []rune(lines[row])
+		for col := 0; col < colCount; col++ {
+			frequency := grid[row][col]
+			if frequency != '.' {
+				antennaMap[frequency] = append(antennaMap[frequency], Coordinate{Row: row, Col: col})
+			}
+		}
+	}
+
+	return grid, antennaMap
+}
+
+func findAntinodes(grid [][]rune, antennaMap map[rune][]Coordinate, onlySpecial bool) int {
+	rowCount := len(grid)
+	colCount := len(grid[0])
+	uniqueAntinodes := make(map[Coordinate]struct{})
+
+	for row := 0; row < rowCount; row++ {
+		for col := 0; col < colCount; col++ {
+			for _, antennaPositions := range antennaMap {
+				for i, firstAntenna := range antennaPositions {
+					for j, secondAntenna := range antennaPositions {
+						//I know I know thats too many for loops
+						if i != j {
+							distance1 := int(math.Abs(float64(row-firstAntenna.Row)) + math.Abs(float64(col-firstAntenna.Col)))
+							distance2 := int(math.Abs(float64(row-secondAntenna.Row)) + math.Abs(float64(col-secondAntenna.Col)))
+
+							rowDiff1 := row - firstAntenna.Row
+							rowDiff2 := row - secondAntenna.Row
+							colDiff1 := col - firstAntenna.Col
+							colDiff2 := col - secondAntenna.Col
+
+							if rowDiff1*colDiff2 == rowDiff2*colDiff1 {
+								if (distance1 == 2*distance2 || distance1*2 == distance2) && onlySpecial {
+									uniqueAntinodes[Coordinate{Row: row, Col: col}] = struct{}{}
+								} else if !onlySpecial {
+									uniqueAntinodes[Coordinate{Row: row, Col: col}] = struct{}{}
+								}
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+
+	return len(uniqueAntinodes)
+}

2024/gareth/day08/day08_test.go

@@ -0,0 +1,39 @@
+package day08
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`............
+........0...
+.....0......
+.......0....
+....0.......
+......A.....
+............
+............
+........A...
+.........A..
+............
+............`)
+	assert.Equal(t, 14, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`............
+........0...
+.....0......
+.......0....
+....0.......
+......A.....
+............
+............
+........A...
+.........A..
+............
+............`)
+	assert.Equal(t, 11387, r)
+}

2024/gareth/day08/input.txt

@@ -0,0 +1,50 @@
+........................E...j......W..........L...
+............................O........E.........L..
+..q......O...........l....................K.......
+............q...................HM......W.........
+................................1..H...........IW.
+....................5.............................
+..........k........M...wl............6............
+.....O.......w...k.....5.8..l......K.........o.6..
+.......k....w.........5.........R.....o........K..
+.....q..X..............j........E...I.........K...
+............O..........E........................H.
+................Mn.h2.w.p....................H....
+..................p.......a............j.....L....
+.....X...l.p.....................m.........W..6...
+..Xq................A..................R..m.......
+.........................i..........a..........R..
+...........u.....................a........I.....2.
+k..............A..n.........R.................o...
+................n.................Qo..............
+..........u.A.........h........2..................
+...5.......Y.....p...............iN...............
+1...x.....................i.......................
+........M..............2.....Qi...................
+...............................I..e...............
+......u......A...........m..........h.............
+.......1...........U.............Qm.......j.......
+.......X.......................................9..
+.....u........U.......Y...........................
+.............................h.e..................
+..................4....e......Q.....L....N........
+.1..................4.......................y8....
+.........Y................................8.N.....
+............P.0J...........3..........8y..........
+....V3P..........J................................
+............U..P...7x...........e.................
+....................J...............r...9.........
+.........0.V......Y...............................
+...............V.4................................
+..........V..........................n............
+..............v........7..........................
+...........U..........J.......7...................
+.....v........7..........................a........
+.......................................r..........
+...........0.......x................y.............
+............6..v.x.....................N..........
+...........P......................................
+........3.......................r......4..........
+..............3......................y............
+................................................9.
+.................................................9

2024/gareth/day09/day09.go

@@ -0,0 +1,104 @@
+package day09
+
+func Part1(input string) int {
+	files, gaps, lengthOfFinalFile := parseInput(input)
+	checksum := compactFiles(files, gaps, lengthOfFinalFile)
+	return checksum
+}
+
+func Part2(input string) int {
+	files, freeSpaces := parseInputPart2(input)
+	checksum := calculateChecksum(files, freeSpaces)
+	return checksum
+}
+
+func parseInput(input string) ([]int, []int, int) {
+	var files []int
+	var gaps []int
+	lengthOfFinalFile := 0
+	for i, char := range input {
+		if i%2 == 0 {
+			files = append(files, int(char-'0'))
+			lengthOfFinalFile += int(char - '0')
+		} else {
+			gaps = append(gaps, int(char-'0'))
+		}
+	}
+	return files, gaps, lengthOfFinalFile
+}
+
+func parseInputPart2(input string) ([][]int, [][]int) {
+	files, freeSpaces, position := [][]int{}, [][]int{}, 0
+	for index, char := range input {
+		length := int(char - '0')
+		if index%2 == 0 {
+			files = append(files, generateRange(position, position+length))
+		} else {
+			freeSpaces = append(freeSpaces, generateRange(position, position+length))
+		}
+		position += length
+	}
+	return files, freeSpaces
+}
+
+func compactFiles(files []int, gaps []int, lengthOfFinalFile int) int {
+	fileIndex := len(files) - 1
+	gapIndex := 0
+	position := files[0]
+	checksum := 0
+	fileID := files[0]
+
+	for lengthOfFinalFile != position {
+		// If there's a gap and a file to move then move the file
+		if gaps[gapIndex] > 0 && files[fileIndex] > 0 {
+			files[fileIndex]--
+			gaps[gapIndex]--
+			checksum += fileIndex * position
+			position++
+		}
+
+		// If this file is fully moved go to next file
+		if files[fileIndex] == 0 {
+			fileIndex--
+			fileID++
+		}
+
+		// Update gapIndex if this gap is filled
+		if gaps[gapIndex] == 0 {
+			gapIndex++
+			for f := 0; f < files[gapIndex]; f++ {
+				checksum += gapIndex * position
+				position++
+			}
+		}
+	}
+
+	return checksum
+}
+
+func generateRange(start, end int) []int {
+	rangeList := make([]int, end-start)
+	for i := range rangeList {
+		rangeList[i] = start + i
+	}
+	return rangeList
+}
+
+func calculateChecksum(files, freeSpaces [][]int) int {
+	checksum := 0
+	for fileIndex := len(files) - 1; fileIndex >= 0; fileIndex-- {
+		for spaceIndex := 0; spaceIndex < len(freeSpaces); spaceIndex++ {
+			if len(freeSpaces[spaceIndex]) >= len(files[fileIndex]) && files[fileIndex][0] > freeSpaces[spaceIndex][0] {
+				files[fileIndex] = freeSpaces[spaceIndex][:len(files[fileIndex])]
+				freeSpaces[spaceIndex] = freeSpaces[spaceIndex][len(files[fileIndex]):]
+			}
+		}
+	}
+
+	for fileID, file := range files {
+		for _, block := range file {
+			checksum += fileID * block
+		}
+	}
+	return checksum
+}

2024/gareth/day09/day09_test.go

@@ -0,0 +1,22 @@
+package day09
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`12345`)
+	assert.Equal(t, 60, r)
+}
+
+func TestPart1Long(t *testing.T) {
+	r := Part1(`2333133121414131402`)
+	assert.Equal(t, 1928, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`2333133121414131402`)
+	assert.Equal(t, 2858, r)
+}

2024/gareth/day10/day10.go

@@ -0,0 +1,141 @@
+package day10
+
+import (
+	"strings"
+)
+
+var directions = [][2]int{
+	{-1, 0},
+	{1, 0},
+	{0, -1},
+	{0, 1},
+}
+
+func Part1(input string) int {
+	grid := ParseInput(input)
+	return CalculateTotalTrailheadScore(grid)
+}
+
+func Part2(input string) int {
+	grid := ParseInput(input)
+	return CalculateTotalTrailheadRating(grid)
+}
+
+func ParseInput(input string) [][]int {
+	lines := strings.Split(strings.TrimSpace(input), "\n")
+	grid := make([][]int, len(lines))
+	for i, line := range lines {
+		grid[i] = make([]int, len(line))
+		for j, char := range line {
+			grid[i][j] = int(char - '0')
+		}
+	}
+	return grid
+}
+
+func IsValidPosition(x, y, rows, cols int) bool {
+	return x >= 0 && x < rows && y >= 0 && y < cols
+}
+
+func DFS(grid [][]int, x, y, prevHeight int, visited [][]bool, reached9 map[[2]int]bool) {
+	rows := len(grid)
+	cols := len(grid[0])
+	if !IsValidPosition(x, y, rows, cols) || visited[x][y] || grid[x][y] != prevHeight+1 {
+		return
+	}
+
+	if grid[x][y] == 9 {
+		reached9[[2]int{x, y}] = true
+		return
+	}
+
+	visited[x][y] = true
+	for _, dir := range directions {
+		nx, ny := x+dir[0], y+dir[1]
+		DFS(grid, nx, ny, grid[x][y], visited, reached9)
+	}
+	visited[x][y] = false
+}
+
+func CalculateTrailheadScore(grid [][]int, x, y int) int {
+	rows := len(grid)
+	cols := len(grid[0])
+	visited := make([][]bool, rows)
+	for i := range visited {
+		visited[i] = make([]bool, cols)
+	}
+
+	reached9 := make(map[[2]int]bool)
+	DFS(grid, x, y, -1, visited, reached9)
+	return len(reached9)
+}
+
+func DFSForRatings(grid [][]int, x, y, prevHeight int, visited [][]bool, trailCache map[[3]int]int) int {
+	rows := len(grid)
+	cols := len(grid[0])
+	if !IsValidPosition(x, y, rows, cols) || visited[x][y] || grid[x][y] != prevHeight+1 {
+		return 0
+	}
+
+	if grid[x][y] == 9 {
+		return 1
+	}
+
+	cacheKey := [3]int{x, y, grid[x][y]}
+	if count, exists := trailCache[cacheKey]; exists {
+		return count
+	}
+
+	visited[x][y] = true
+	totalTrails := 0
+	for _, dir := range directions {
+		nx, ny := x+dir[0], y+dir[1]
+		totalTrails += DFSForRatings(grid, nx, ny, grid[x][y], visited, trailCache)
+	}
+	visited[x][y] = false
+
+	trailCache[cacheKey] = totalTrails
+	return totalTrails
+}
+
+func CalculateTrailheadRating(grid [][]int, x, y int) int {
+	rows := len(grid)
+	cols := len(grid[0])
+	visited := make([][]bool, rows)
+	for i := range visited {
+		visited[i] = make([]bool, cols)
+	}
+
+	trailCache := make(map[[3]int]int)
+	return DFSForRatings(grid, x, y, -1, visited, trailCache)
+}
+
+func CalculateTotalTrailheadScore(grid [][]int) int {
+	rows := len(grid)
+	cols := len(grid[0])
+	totalScore := 0
+	for i := 0; i < rows; i++ {
+		for j := 0; j < cols; j++ {
+			if grid[i][j] == 0 {
+				score := CalculateTrailheadScore(grid, i, j)
+				totalScore += score
+			}
+		}
+	}
+	return totalScore
+}
+
+func CalculateTotalTrailheadRating(grid [][]int) int {
+	rows := len(grid)
+	cols := len(grid[0])
+	totalRating := 0
+	for i := 0; i < rows; i++ {
+		for j := 0; j < cols; j++ {
+			if grid[i][j] == 0 {
+				rating := CalculateTrailheadRating(grid, i, j)
+				totalRating += rating
+			}
+		}
+	}
+	return totalRating
+}

2024/gareth/day10/day10_test.go

@@ -0,0 +1,31 @@
+package day10
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`89010123
+78121874
+87430965
+96549874
+45678903
+32019012
+01329801
+10456732`)
+	assert.Equal(t, 36, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`89010123
+78121874
+87430965
+96549874
+45678903
+32019012
+01329801
+10456732`)
+	assert.Equal(t, 81, r)
+}

2024/gareth/day10/input.txt

@@ -0,0 +1,45 @@
+987123434330121232101001234730123456781067632
+876076576521010345692340349823212347892398701
+945087689432105676787659856714503210987445610
+332196576587654989801456787609654502376530923
+211543210298923215432321098128778901430121894
+300692340147210106523543210039569876589836765
+456781678236103267015693016543410231276745650
+576890549345234178106782187612320140345654321
+985098432100125089235493498109876056034765012
+834127102345456978340362569018765487123876678
+123236221976347869651251078729034398101985589
+014545340889298958707867897430120987012834432
+105965456770107843216950956541231276543124501
+896872378761016930345441019876501345678023670
+787901069654325321210332398545432330589012981
+107821543213034321089206787638901421432103210
+215430694102123475670115896129876548901210349
+126989780210014984308924925014578037654321458
+037878921001235675217833210123669123109452367
+549865438901045102346542106548754321278501476
+678954987432696201256430087239689870347699985
+230143006501787349961021298101236787656788014
+123272112981010458872787034010345691875107623
+054387623472129867763698125676210010961234510
+565694502561036789854567012980387121250129878
+676783411051045672343218763901296030343278569
+989872123432345891050109654812345145467303450
+012763094321056700891760345765432256958912341
+103450185789763211709851236876301967843211032
+814321276656854345612345654954101878701208983
+923434434565956745678036783063210989870345674
+874532345410345832989123192178981876781456564
+265101654323234901808765013265432185692387565
+103216765432101267814554323476501094501893474
+232109856321011876923601098789678923432102985
+343898707896540945498712367765672310567891078
+456789010987231234321203456894581455454986569
+556776125670102343100157654503490166303890432
+543895434894321765212348983212321876212761201
+432104898765010894301054581200110955211654300
+301256567656987105498765690341034567300563212
+434567430547896234787654785652123498456767843
+321798121032345375696543098743096567877854952
+210899021121036789781232143456787656928923761
+326765430110145678710123232109876543210010890

2024/gareth/day11/day11.go

@@ -0,0 +1,89 @@
+package day11
+
+import (
+	"strconv"
+	"strings"
+)
+
+func Part1(input string) int {
+	stones := ParseInput(input)
+	return len(blinkTimes(stones, 25))
+}
+
+func Part2(input string) int {
+	stones := ParseInput(input)
+	return getNumStones(stones, 75)
+}
+
+func ParseInput(input string) []int {
+	strStones := strings.Split(strings.TrimSpace(input), " ")
+	stones := make([]int, 0, len(strStones))
+	for _, s := range strStones {
+		num, _ := strconv.Atoi(s)
+		stones = append(stones, num)
+	}
+	return stones
+}
+
+// Part 1 initial thought of recursion
+func blinkTimes(stones []int, times int) []int {
+	if times <= 0 {
+		return stones
+	}
+	result := blink(stones)
+	return blinkTimes(result, times-1)
+}
+
+func blink(stones []int) []int {
+	result := make([]int, 0)
+	for _, stone := range stones {
+		strStone := strconv.Itoa(stone)
+		if stone == 0 {
+			result = append(result, 1)
+		} else if len(strStone)%2 == 0 {
+			mid := len(strStone) / 2
+			firstHalf, _ := strconv.Atoi(strStone[:mid])
+			secondHalf, _ := strconv.Atoi(strStone[mid:])
+			result = append(result, firstHalf, secondHalf)
+		} else {
+			result = append(result, stone*2024)
+		}
+	}
+	return result
+}
+
+// Part 2 with maps since blinkTimes(75) would set my computer on fire
+func getNumStones(s []int, times int) int {
+	stoneMap := make(map[int]int)
+	for _, stone := range s {
+		stoneMap[stone] = stoneMap[stone] + 1
+	}
+
+	for i := 0; i < times; i++ {
+		stoneMap2 := make(map[int]int)
+		for stone, count := range stoneMap {
+			stones := make([]int, 0)
+			strStone := strconv.Itoa(stone)
+			if stone == 0 {
+				stones = append(stones, 1)
+			} else if len(strStone)%2 == 0 {
+				mid := len(strStone) / 2
+				firstHalf, _ := strconv.Atoi(strStone[:mid])
+				secondHalf, _ := strconv.Atoi(strStone[mid:])
+				stones = append(stones, firstHalf, secondHalf)
+			} else {
+				stones = append(stones, stone*2024)
+			}
+			for _, newStone := range stones {
+				stoneMap2[newStone] = stoneMap2[newStone] + count
+			}
+		}
+		stoneMap = stoneMap2
+	}
+
+	result := 0
+	for _, count := range stoneMap {
+		result += count
+	}
+	return result
+}

2024/gareth/day11/day11_test.go

@@ -0,0 +1,12 @@
+package day11
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`125 17`)
+	assert.Equal(t, 55312, r)
+}

2024/gareth/day11/input.txt

@@ -0,0 +1 @@
+965842 9159 3372473 311 0 6 86213 48

2024/gareth/day13/day13.go

@@ -0,0 +1,76 @@
+package day13
+
+import (
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+type ClawMachine struct {
+	Ax, Ay int
+	Bx, By int
+	Px, Py int
+}
+
+func Part1(input string) int {
+	clawMachines := parseInput(input)
+	total := 0
+	for _, c := range clawMachines {
+		x, y := solveSimEquations(c.Ax, c.Bx, c.Px, c.Ay, c.By, c.Py)
+		total += x*3 + y
+	}
+	return total
+}
+
+func Part2(input string) int {
+	clawMachines := parseInput(input)
+	total := 0
+	for _, c := range clawMachines {
+		prizeX, prizeY := c.Px+10000000000000, c.Py+10000000000000
+		det, x, y := c.Ax*c.By-c.Bx*c.Ay, prizeX*c.By-c.Bx*prizeY, c.Ax*prizeY-prizeX*c.Ay
+		if det != 0 && x == (x/det)*det && y == (y/det)*det {
+			total += (x/det)*3 + (y / det)
+		}
+	}
+
+	return total
+}
+
+func parseInput(input string) []ClawMachine {
+	clawMachines := strings.Split(strings.TrimSpace(input), "\n\n")
+	output := make([]ClawMachine, 0, len(clawMachines))
+	for _, c := range clawMachines {
+		var clawMachine ClawMachine
+		line := strings.Split(strings.TrimSpace(c), "\n")
+
+		re := regexp.MustCompile(`X\+(\d+), Y\+(\d+)`)
+		matches := re.FindStringSubmatch(line[0])
+		clawMachine.Ax, _ = strconv.Atoi(matches[1])
+		clawMachine.Ay, _ = strconv.Atoi(matches[2])
+
+		matches = re.FindStringSubmatch(line[1])
+		clawMachine.Bx, _ = strconv.Atoi(matches[1])
+		clawMachine.By, _ = strconv.Atoi(matches[2])
+
+		re = regexp.MustCompile(`X=(\d+), Y=(\d+)`)
+		matches = re.FindStringSubmatch(line[2])
+		clawMachine.Px, _ = strconv.Atoi(matches[1])
+		clawMachine.Py, _ = strconv.Atoi(matches[2])
+
+		output = append(output, clawMachine)
+	}
+	return output
+}
+
+func solveSimEquations(a1, b1, c1, a2, b2, c2 int) (int, int) {
+	det := a1*b2 - a2*b1
+	if det == 0 || (c1*b2-c2*b1)%det != 0 || (a1*c2-a2*c1)%det != 0 {
+		return 0, 0
+	}
+	x := (c1*b2 - c2*b1) / det
+	y := (a1*c2 - a2*c1) / det
+	if x < 0 || x > 100 || y < 0 || y > 100 {
+		return 0, 0
+	}
+	return x, y
+}

2024/gareth/day13/day13_test.go

@@ -0,0 +1,45 @@
+package day13
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`Button A: X+94, Y+34
+Button B: X+22, Y+67
+Prize: X=8400, Y=5400
+
+Button A: X+26, Y+66
+Button B: X+67, Y+21
+Prize: X=12748, Y=12176
+
+Button A: X+17, Y+86
+Button B: X+84, Y+37
+Prize: X=7870, Y=6450
+
+Button A: X+69, Y+23
+Button B: X+27, Y+71
+Prize: X=18641, Y=10279`)
+	assert.Equal(t, 480, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`Button A: X+94, Y+34
+Button B: X+22, Y+67
+Prize: X=8400, Y=5400
+
+Button A: X+26, Y+66
+Button B: X+67, Y+21
+Prize: X=12748, Y=12176
+
+Button A: X+17, Y+86
+Button B: X+84, Y+37
+Prize: X=7870, Y=6450
+
+Button A: X+69, Y+23
+Button B: X+27, Y+71
+Prize: X=18641, Y=10279`)
+	assert.Equal(t, 0, r)
+}

2024/gareth/day14/day14.go

@@ -0,0 +1,172 @@
+package day14
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+type Robot struct {
+	px, py int // position
+	vx, vy int // velocity
+}
+
+func Part1(input string) int {
+	// Parse the input
+	lines := strings.Split(input, "\n")
+	var robots []Robot
+	for _, line := range lines {
+		robot := ParseRobot(line)
+		robots = append(robots, robot)
+	}
+
+	// Define grid size
+	gridWidth := 101
+	gridHeight := 103
+
+	// Update robot positions for 100 seconds
+	for i := 0; i < 100; i++ {
+		for j := range robots {
+			robots[j].UpdatePosition(gridWidth, gridHeight)
+		}
+	}
+
+	// Count the robots in each quadrant
+	q1, q2, q3, q4 := CountRobotsInQuadrants(robots, gridWidth, gridHeight)
+	fmt.Printf("Quadrant counts: Q1=%d, Q2=%d, Q3=%d, Q4=%d\n", q1, q2, q3, q4)
+
+	// Calculate the safety factor
+	safetyFactor := CalculateSafetyFactor(q1, q2, q3, q4)
+	fmt.Printf("Safety Factor: %d\n", safetyFactor)
+	return safetyFactor
+}
+
+func Part2(input string) int {
+	// Parse the input
+	lines := strings.Split(input, "\n")
+	var robots []Robot
+	for _, line := range lines {
+		robot := ParseRobot(line)
+		robots = append(robots, robot)
+	}
+
+	// Define grid size
+	gridWidth := 101
+	gridHeight := 103
+
+	// Update robot positions for 100 seconds
+	for i := 0; i < 6285; i++ {
+		for j := range robots {
+			robots[j].UpdatePosition(gridWidth, gridHeight)
+		}
+	}
+
+	DisplayGrid(robots, gridWidth, gridHeight)
+	return 2
+}
+
+// ParseRobot takes a line of input and converts it to a Robot struct
+func ParseRobot(line string) Robot {
+	parts := strings.Split(line, " ")
+	posParts := strings.Split(parts[0][2:], ",") // Extract p=x,y and split
+	velParts := strings.Split(parts[1][2:], ",") // Extract v=x,y and split
+
+	px, _ := strconv.Atoi(posParts[0])
+	py, _ := strconv.Atoi(posParts[1])
+	vx, _ := strconv.Atoi(velParts[0])
+	vy, _ := strconv.Atoi(velParts[1])
+
+	return Robot{px, py, vx, vy}
+}
+
+// UpdatePosition updates the position of a robot, considering the wrap-around
+func (r *Robot) UpdatePosition(gridWidth, gridHeight int) {
+	r.px = (r.px + r.vx + gridWidth) % gridWidth
+	r.py = (r.py + r.vy + gridHeight) % gridHeight
+}
+
+// CountRobotsInQuadrants counts the number of robots in each of the four quadrants
+func CountRobotsInQuadrants(robots []Robot, width, height int) (int, int, int, int) {
+	midX := width / 2
+	midY := height / 2
+
+	q1, q2, q3, q4 := 0, 0, 0, 0
+
+	for _, r := range robots {
+		if r.px == midX || r.py == midY {
+			// Skip robots on the middle line
+			continue
+		}
+		if r.px < midX && r.py < midY {
+			q1++ // Top-left quadrant
+		} else if r.px > midX && r.py < midY {
+			q2++ // Top-right quadrant
+		} else if r.px < midX && r.py > midY {
+			q3++ // Bottom-left quadrant
+		} else if r.px > midX && r.py > midY {
+			q4++ // Bottom-right quadrant
+		}
+	}
+
+	return q1, q2, q3, q4
+}
+
+// CalculateSafetyFactor multiplies the number of robots in each quadrant
+func CalculateSafetyFactor(q1, q2, q3, q4 int) int {
+	return q1 * q2 * q3 * q4
+}
+
+// DisplayGrid displays the current state of the grid
+func DisplayGrid(robots []Robot, width, height int) {
+	grid := make([][]rune, height)
+	for i := range grid {
+		grid[i] = make([]rune, width)
+		for j := range grid[i] {
+			grid[i][j] = '.'
+		}
+	}
+	for _, r := range robots {
+		grid[r.py][r.px] = '#'
+	}
+	for _, row := range grid {
+		fmt.Println(string(row))
+	}
+}
+
+// FindEasterEgg determines the fewest number of seconds that must elapse for the robots to display the Easter egg
+func FindEasterEgg(robots []Robot, width, height int) int {
+	smallestArea := width * height
+	bestTime := 0
+	for t := 6285; t < 6286; t++ { // Large upper limit to search
+		// Update robot positions
+		for i := range robots {
+			robots[i].UpdatePosition(width, height)
+		}
+		// Calculate the bounding box of all robot positions
+		minX, minY := width, height
+		maxX, maxY := 0, 0
+		for _, r := range robots {
+			if r.px < minX {
+				minX = r.px
+			}
+			if r.px > maxX {
+				maxX = r.px
+			}
+			if r.py < minY {
+				minY = r.py
+			}
+			if r.py > maxY {
+				maxY = r.py
+			}
+		}
+
+		area := (maxX - minX + 1) * (maxY - minY + 1)
+		if area < smallestArea {
+			smallestArea = area
+			bestTime = t + 1
+			fmt.Printf("Time: %d\n", bestTime)
+			DisplayGrid(robots, width, height)
+		}
+	}
+	return bestTime
+}

2024/gareth/day14/day14_test.go

@@ -0,0 +1,23 @@
+package day14
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`p=0,4 v=3,-3
+p=6,3 v=-1,-3
+p=10,3 v=-1,2
+p=2,0 v=2,-1
+p=0,0 v=1,3
+p=3,0 v=-2,-2
+p=7,6 v=-1,-3
+p=3,0 v=-1,-2
+p=9,3 v=2,3
+p=7,3 v=-1,2
+p=2,4 v=2,-3
+p=9,5 v=-3,-3`)
+	assert.Equal(t, 12, r)
+}

2024/gareth/day14/input.txt

@@ -0,0 +1,500 @@
+p=38,76 v=-61,88
+p=28,22 v=-43,-40
+p=76,78 v=-98,87
+p=39,56 v=10,96
+p=38,0 v=79,-15
+p=6,44 v=-88,53
+p=40,80 v=-83,31
+p=11,2 v=28,-31
+p=41,91 v=-86,-48
+p=8,55 v=-81,95
+p=77,19 v=3,-90
+p=94,73 v=-59,42
+p=51,53 v=35,48
+p=12,52 v=72,6
+p=62,61 v=96,47
+p=78,62 v=47,-57
+p=39,54 v=53,50
+p=1,43 v=-64,-46
+p=9,21 v=28,-36
+p=92,79 v=67,-47
+p=6,15 v=-58,-48
+p=54,67 v=99,-38
+p=96,99 v=-55,30
+p=90,44 v=-10,-8
+p=23,84 v=20,77
+p=5,84 v=28,88
+p=55,20 v=-31,-36
+p=84,43 v=-37,-41
+p=12,75 v=-38,30
+p=39,2 v=-12,-29
+p=74,14 v=56,-81
+p=63,53 v=22,-53
+p=51,28 v=9,-90
+p=53,72 v=48,-61
+p=33,42 v=-43,23
+p=75,18 v=-89,-37
+p=38,83 v=27,38
+p=69,31 v=61,80
+p=73,3 v=-45,74
+p=39,29 v=92,17
+p=78,45 v=-23,-47
+p=48,59 v=-57,38
+p=2,41 v=-71,-93
+p=30,13 v=36,-82
+p=37,57 v=25,13
+p=51,73 v=56,-98
+p=76,78 v=38,91
+p=56,49 v=22,55
+p=34,47 v=10,84
+p=83,93 v=81,-16
+p=14,70 v=71,-50
+p=97,74 v=-4,70
+p=33,8 v=93,-35
+p=39,70 v=-2,19
+p=94,63 v=20,44
+p=86,4 v=-33,19
+p=17,67 v=26,44
+p=39,2 v=-70,-25
+p=47,56 v=-79,-55
+p=5,98 v=86,-75
+p=53,21 v=79,-89
+p=53,85 v=61,73
+p=46,32 v=66,54
+p=30,75 v=49,-73
+p=44,81 v=-61,-69
+p=82,66 v=-72,-6
+p=89,76 v=-13,98
+p=57,87 v=30,36
+p=12,41 v=59,-40
+p=36,56 v=10,-61
+p=60,80 v=48,39
+p=50,75 v=-44,42
+p=66,56 v=-93,-1
+p=57,96 v=83,-79
+p=98,88 v=-15,-16
+p=0,63 v=59,44
+p=90,27 v=29,-40
+p=21,60 v=-86,2
+p=85,13 v=11,61
+p=92,77 v=24,-34
+p=16,24 v=80,4
+p=47,8 v=-79,-49
+p=1,28 v=-82,-48
+p=80,55 v=6,-72
+p=60,94 v=-67,-15
+p=83,90 v=-98,78
+p=3,75 v=46,-66
+p=93,40 v=15,11
+p=52,37 v=48,7
+p=23,4 v=-47,25
+p=46,43 v=57,-98
+p=23,12 v=-98,-36
+p=11,42 v=-83,50
+p=80,33 v=25,54
+p=59,95 v=-1,36
+p=55,67 v=-44,-60
+p=90,80 v=83,-39
+p=57,61 v=-1,96
+p=51,79 v=31,39
+p=28,89 v=85,35
+p=12,98 v=28,-80
+p=25,61 v=-95,-50
+p=77,84 v=-37,78
+p=50,80 v=66,89
+p=93,32 v=-15,-45
+p=30,4 v=-96,-29
+p=81,95 v=14,-66
+p=23,3 v=42,-16
+p=33,69 v=-96,-10
+p=28,23 v=-43,68
+p=77,25 v=-45,-41
+p=27,96 v=-69,-32
+p=41,15 v=-53,-35
+p=66,81 v=-22,5
+p=5,15 v=13,-95
+p=88,1 v=-59,-26
+p=48,41 v=16,-19
+p=88,75 v=33,46
+p=21,9 v=-64,-86
+p=36,4 v=-16,-95
+p=68,22 v=-5,65
+p=8,43 v=-34,46
+p=71,68 v=-49,-59
+p=37,92 v=-48,-18
+p=59,43 v=-21,-10
+p=69,31 v=30,58
+p=90,77 v=46,-74
+p=42,42 v=-76,20
+p=58,34 v=78,55
+p=18,10 v=33,2
+p=23,92 v=45,-69
+p=23,45 v=-32,27
+p=63,50 v=39,-96
+p=8,72 v=-34,85
+p=22,102 v=-69,26
+p=73,14 v=-45,-38
+p=65,54 v=-51,68
+p=99,29 v=-16,67
+p=29,60 v=15,-19
+p=85,76 v=-54,80
+p=21,23 v=-3,-47
+p=9,37 v=94,-44
+p=99,77 v=48,80
+p=48,47 v=18,56
+p=26,61 v=36,-57
+p=80,58 v=56,90
+p=37,6 v=53,-90
+p=47,15 v=53,60
+p=4,79 v=70,52
+p=35,8 v=31,12
+p=18,8 v=25,-30
+p=80,38 v=33,45
+p=23,26 v=-69,61
+p=10,35 v=-78,-96
+p=53,17 v=48,-34
+p=24,45 v=72,-2
+p=65,75 v=-1,-38
+p=5,72 v=-49,39
+p=63,87 v=-27,-16
+p=0,46 v=-34,73
+p=14,46 v=55,-15
+p=28,70 v=45,92
+p=29,30 v=89,10
+p=98,31 v=-46,-89
+p=1,85 v=-77,82
+p=30,79 v=-43,28
+p=29,70 v=-81,65
+p=51,97 v=13,-25
+p=76,19 v=-23,18
+p=36,83 v=-17,91
+p=52,34 v=-39,-98
+p=35,46 v=-43,55
+p=97,13 v=-99,-26
+p=40,26 v=27,13
+p=18,38 v=89,57
+p=45,57 v=-79,-52
+p=86,76 v=-54,-64
+p=12,38 v=28,55
+p=6,56 v=-86,97
+p=85,100 v=-41,-22
+p=4,34 v=28,-95
+p=89,33 v=-4,-73
+p=82,20 v=-33,-15
+p=98,5 v=31,43
+p=85,81 v=73,88
+p=13,42 v=-90,-49
+p=93,60 v=-91,-64
+p=56,7 v=-5,64
+p=9,5 v=45,76
+p=61,4 v=74,86
+p=23,53 v=-7,3
+p=89,21 v=-38,-74
+p=13,44 v=-86,10
+p=96,62 v=-11,96
+p=5,98 v=-22,3
+p=26,26 v=-73,-93
+p=52,95 v=-5,42
+p=62,50 v=-57,-7
+p=11,2 v=41,-77
+p=23,73 v=-2,-97
+p=34,77 v=-47,-71
+p=91,58 v=99,43
+p=41,74 v=-53,42
+p=75,102 v=55,-81
+p=89,95 v=30,8
+p=76,28 v=-80,12
+p=82,27 v=-43,77
+p=62,63 v=-97,21
+p=94,73 v=-58,14
+p=13,35 v=-47,-46
+p=56,0 v=61,25
+p=94,39 v=11,8
+p=96,53 v=77,-53
+p=23,78 v=-43,-7
+p=24,51 v=-74,-86
+p=77,33 v=60,8
+p=84,71 v=-76,19
+p=78,96 v=82,3
+p=61,92 v=-58,-30
+p=9,75 v=94,-34
+p=89,13 v=7,-26
+p=16,67 v=-25,96
+p=95,43 v=-25,-54
+p=39,62 v=18,-40
+p=41,36 v=17,-65
+p=2,42 v=86,-10
+p=29,54 v=55,-2
+p=51,74 v=-44,92
+p=75,40 v=-36,-96
+p=60,15 v=-93,-84
+p=44,33 v=44,8
+p=88,51 v=85,-94
+p=26,60 v=43,62
+p=94,22 v=-81,-98
+p=4,50 v=-94,-96
+p=87,47 v=-55,3
+p=15,80 v=33,-14
+p=4,48 v=-24,-48
+p=57,36 v=-18,-98
+p=87,12 v=76,63
+p=53,17 v=-91,-81
+p=17,96 v=53,6
+p=91,40 v=95,-46
+p=23,28 v=-55,55
+p=81,7 v=-54,16
+p=62,102 v=-97,-77
+p=42,31 v=80,-41
+p=99,53 v=-72,57
+p=17,29 v=98,58
+p=24,57 v=84,-48
+p=98,101 v=-33,-30
+p=77,82 v=-36,-25
+p=44,8 v=83,18
+p=27,35 v=-27,16
+p=95,58 v=-29,52
+p=87,40 v=60,-91
+p=66,1 v=17,24
+p=17,11 v=63,21
+p=67,77 v=-23,-11
+p=91,30 v=-59,64
+p=22,34 v=7,84
+p=55,90 v=48,29
+p=45,45 v=31,50
+p=12,34 v=65,-86
+p=40,48 v=18,-1
+p=39,42 v=75,11
+p=28,27 v=63,-49
+p=93,44 v=-81,3
+p=8,78 v=-51,-15
+p=6,37 v=-51,-42
+p=73,89 v=-45,23
+p=2,80 v=-23,50
+p=93,37 v=55,-44
+p=16,52 v=-54,35
+p=15,17 v=-33,74
+p=84,37 v=-6,-48
+p=13,47 v=50,-48
+p=88,34 v=-79,-39
+p=16,68 v=50,94
+p=20,78 v=-99,29
+p=100,20 v=77,64
+p=79,2 v=-91,30
+p=52,0 v=-95,-86
+p=4,84 v=79,35
+p=13,74 v=19,-66
+p=57,55 v=-9,-63
+p=21,30 v=19,-94
+p=50,37 v=-66,4
+p=9,56 v=94,95
+p=91,59 v=55,-65
+p=77,15 v=34,-33
+p=5,100 v=81,-26
+p=26,96 v=-34,83
+p=36,64 v=-44,94
+p=37,65 v=-70,51
+p=74,6 v=25,-93
+p=33,78 v=-17,-48
+p=0,33 v=-6,-39
+p=3,55 v=-11,96
+p=32,19 v=-8,-33
+p=60,53 v=-5,-55
+p=75,62 v=56,45
+p=74,71 v=12,-66
+p=50,74 v=-53,91
+p=24,90 v=-19,-57
+p=58,53 v=31,5
+p=13,95 v=-33,20
+p=30,98 v=41,-70
+p=54,78 v=71,-43
+p=78,73 v=26,53
+p=66,30 v=-49,60
+p=81,87 v=-24,-15
+p=28,27 v=-31,11
+p=75,18 v=-89,10
+p=76,82 v=-89,-66
+p=44,65 v=-17,98
+p=17,42 v=-7,-5
+p=75,92 v=-54,32
+p=95,10 v=-28,-76
+p=20,36 v=-22,-62
+p=100,0 v=11,21
+p=37,39 v=5,-46
+p=80,50 v=-63,7
+p=77,28 v=-98,2
+p=61,41 v=-1,-40
+p=88,78 v=95,-17
+p=83,1 v=47,-30
+p=47,67 v=-30,-9
+p=14,81 v=-38,82
+p=40,97 v=-31,76
+p=76,27 v=37,-70
+p=25,73 v=80,35
+p=88,84 v=-33,77
+p=60,71 v=83,35
+p=14,93 v=-3,-25
+p=40,45 v=-35,4
+p=34,35 v=15,19
+p=87,100 v=90,-66
+p=20,90 v=-42,-68
+p=90,44 v=50,-52
+p=43,77 v=31,89
+p=99,81 v=33,-12
+p=28,35 v=58,-37
+p=37,52 v=57,6
+p=48,65 v=-66,23
+p=63,21 v=39,-35
+p=91,77 v=-15,-70
+p=27,28 v=93,-94
+p=18,61 v=-99,38
+p=56,36 v=-98,81
+p=90,75 v=-72,-67
+p=86,21 v=-13,-46
+p=20,88 v=89,-74
+p=17,41 v=-82,-98
+p=28,65 v=45,-72
+p=85,15 v=35,41
+p=39,43 v=-2,-36
+p=93,72 v=-94,91
+p=90,73 v=-64,77
+p=83,43 v=-94,-99
+p=50,59 v=-49,51
+p=58,25 v=13,-36
+p=25,102 v=-44,-54
+p=100,86 v=16,-23
+p=45,42 v=21,-90
+p=9,29 v=-13,18
+p=24,41 v=1,-47
+p=69,33 v=-58,55
+p=80,52 v=52,-2
+p=82,77 v=82,-11
+p=86,78 v=-41,-69
+p=89,58 v=69,-13
+p=12,91 v=-55,-65
+p=69,40 v=-93,59
+p=8,26 v=2,19
+p=21,47 v=19,3
+p=38,20 v=25,-83
+p=20,99 v=54,31
+p=20,74 v=-14,-30
+p=51,83 v=-40,24
+p=61,30 v=-27,-94
+p=84,19 v=-28,69
+p=28,33 v=-65,3
+p=58,91 v=-93,-18
+p=33,78 v=22,92
+p=86,53 v=63,-43
+p=53,79 v=-26,-42
+p=83,16 v=94,56
+p=21,0 v=-64,-35
+p=48,80 v=-97,79
+p=62,18 v=29,71
+p=17,13 v=-69,-36
+p=1,93 v=19,75
+p=7,75 v=41,93
+p=65,61 v=-45,65
+p=56,71 v=92,-63
+p=71,102 v=-53,-21
+p=64,79 v=96,49
+p=40,13 v=-74,-84
+p=28,71 v=93,91
+p=43,68 v=-39,-6
+p=10,40 v=63,55
+p=73,0 v=-97,-82
+p=26,38 v=85,-27
+p=27,94 v=36,-79
+p=1,99 v=-82,-30
+p=66,96 v=-23,31
+p=78,21 v=96,16
+p=10,93 v=-51,-76
+p=76,87 v=78,80
+p=13,20 v=-38,68
+p=31,42 v=-43,5
+p=56,10 v=-53,-33
+p=76,61 v=34,-4
+p=73,2 v=-36,74
+p=93,83 v=15,-19
+p=76,50 v=20,-51
+p=27,53 v=36,-51
+p=93,97 v=50,72
+p=59,22 v=87,21
+p=95,22 v=-29,66
+p=56,35 v=79,10
+p=60,38 v=17,-94
+p=67,41 v=-5,6
+p=97,71 v=-73,35
+p=26,10 v=-73,74
+p=74,71 v=5,64
+p=36,91 v=84,-17
+p=38,91 v=67,33
+p=19,64 v=41,-9
+p=89,15 v=-59,66
+p=5,94 v=94,-27
+p=92,21 v=7,-87
+p=87,64 v=-28,-5
+p=22,6 v=-95,25
+p=59,42 v=-51,-7
+p=50,95 v=88,29
+p=59,91 v=73,-21
+p=52,42 v=-75,56
+p=10,39 v=-30,7
+p=88,79 v=29,-62
+p=31,89 v=-21,-82
+p=43,60 v=4,52
+p=2,76 v=-68,-15
+p=13,71 v=-38,97
+p=93,38 v=1,-95
+p=53,99 v=10,16
+p=94,72 v=-98,30
+p=1,3 v=37,-82
+p=68,78 v=55,18
+p=1,78 v=42,-7
+p=80,84 v=52,-26
+p=75,46 v=-87,-20
+p=71,27 v=95,-39
+p=90,18 v=73,11
+p=99,3 v=62,52
+p=39,88 v=-80,-93
+p=85,32 v=69,-40
+p=72,23 v=-28,-75
+p=22,59 v=98,-7
+p=69,76 v=12,93
+p=56,59 v=30,50
+p=80,92 v=-49,-80
+p=4,40 v=-77,-50
+p=90,60 v=40,-28
+p=6,79 v=9,56
+p=63,47 v=57,-59
+p=33,62 v=22,37
+p=74,27 v=78,70
+p=26,101 v=-43,-49
+p=1,24 v=-29,-38
+p=73,90 v=56,79
+p=5,90 v=-20,-75
+p=16,35 v=94,8
+p=96,93 v=4,58
+p=61,43 v=4,4
+p=13,68 v=76,94
+p=5,29 v=86,-95
+p=32,81 v=39,-85
+p=94,42 v=-37,55
+p=80,20 v=60,22
+p=43,94 v=57,-19
+p=93,4 v=51,-26
+p=12,4 v=62,-58
+p=87,74 v=-98,-64
+p=81,41 v=-26,69
+p=30,54 v=-30,-13
+p=73,4 v=21,-30
+p=68,35 v=-49,-44
+p=47,2 v=19,-70
+p=92,100 v=33,79
+p=81,11 v=73,-83
+p=46,75 v=-62,-69
+p=48,56 v=-13,-56
+p=7,84 v=15,30
+p=92,10 v=28,69
+p=15,31 v=-87,61
+p=95,0 v=33,79
+p=3,61 v=-37,-50
+p=73,95 v=96,20

2024/gareth/day18/day18.go

@@ -0,0 +1,156 @@
+package day18
+
+import (
+	"container/heap"
+	"strconv"
+	"strings"
+)
+
+type Point struct {
+	x, y int
+}
+
+// Item represents a node in the priority queue.
+type Item struct {
+	point    Point
+	distance int
+	index    int
+}
+
+func Part1(input string) int {
+	grid := parseInput(input, 1024)
+	_, distance := dijkstra(grid)
+	return distance
+}
+
+func Part2(input string) int {
+	lines := strings.Split(strings.TrimSpace(input), "\n")
+	numLines := len(lines)
+	for i := 1; i <= numLines; i++ {
+		grid := parseInput(input, i)
+		_, distance := dijkstra(grid)
+		if distance == -1 {
+			println(lines[i-1])
+			return 2
+		}
+	}
+	return -1
+}
+
+func parseInput(input string, upToLine int) [][]rune {
+	grid := make([][]rune, 71)
+	for i := range grid {
+		grid[i] = make([]rune, 71)
+		for j := range grid[i] {
+			grid[i][j] = '.'
+		}
+	}
+
+	lines := strings.Split(strings.TrimSpace(input), "\n")
+
+	for index, line := range lines {
+		if index == upToLine {
+			break
+		}
+		cords := strings.Split(strings.TrimSpace(line), ",")
+		x, _ := strconv.Atoi(cords[0])
+		y, _ := strconv.Atoi(cords[1])
+		grid[x][y] = '#'
+	}
+	return grid
+}
+
+// PriorityQueue implements a priority queue for Dijkstra's algorithm.
+type PriorityQueue []*Item
+
+func (pq PriorityQueue) Len() int { return len(pq) }
+func (pq PriorityQueue) Less(i, j int) bool {
+	return pq[i].distance < pq[j].distance
+}
+func (pq PriorityQueue) Swap(i, j int) {
+	pq[i], pq[j] = pq[j], pq[i]
+	pq[i].index = i
+	pq[j].index = j
+}
+
+func (pq *PriorityQueue) Push(x interface{}) {
+	n := len(*pq)
+	item := x.(*Item)
+	item.index = n
+	*pq = append(*pq, item)
+}
+
+func (pq *PriorityQueue) Pop() interface{} {
+	old := *pq
+	n := len(old)
+	item := old[n-1]
+	item.index = -1
+	*pq = old[0 : n-1]
+	return item
+}
+
+func isValid(grid [][]rune, x, y int) bool {
+	return x >= 0 && x < len(grid) && y >= 0 && y < len(grid[0]) && grid[x][y] == '.'
+}
+
+func dijkstra(grid [][]rune) ([][]rune, int) {
+	directions := []Point{{0, 1}, {1, 0}, {0, -1}, {-1, 0}}
+	rows, cols := len(grid), len(grid[0])
+
+	// Validate start and end points
+	if grid[0][0] != '.' || grid[rows-1][cols-1] != '.' {
+		return grid, -1 // No path if start or end is not valid
+	}
+
+	dist := make([][]int, rows)
+	for i := range dist {
+		dist[i] = make([]int, cols)
+		for j := range dist[i] {
+			dist[i][j] = 1 << 30
+		}
+	}
+
+	pq := &PriorityQueue{}
+	heap.Init(pq)
+	heap.Push(pq, &Item{point: Point{0, 0}, distance: 0})
+	dist[0][0] = 0
+
+	path := make([][]Point, rows)
+	for i := range path {
+		path[i] = make([]Point, cols)
+	}
+
+	for pq.Len() > 0 {
+		item := heap.Pop(pq).(*Item)
+		x, y := item.point.x, item.point.y
+		if x == rows-1 && y == cols-1 {
+			break
+		}
+		for _, dir := range directions {
+			nx, ny := x+dir.x, y+dir.y
+			if isValid(grid, nx, ny) {
+				newDist := dist[x][y] + 1
+				if newDist < dist[nx][ny] {
+					dist[nx][ny] = newDist
+					heap.Push(pq, &Item{point: Point{nx, ny}, distance: newDist})
+					path[nx][ny] = Point{x, y}
+				}
+			}
+		}
+	}
+
+	// Check if no path exists
+	if dist[rows-1][cols-1] == 1<<30 {
+		return grid, -1 // No path found
+	}
+
+	// Reconstruct the path
+	x, y := rows-1, cols-1
+	for x != 0 || y != 0 {
+		grid[x][y] = 'O'
+		x, y = path[x][y].x, path[x][y].y
+	}
+	grid[0][0] = 'O'
+
+	return grid, dist[rows-1][cols-1]
+}

2024/gareth/day18/day18_test.go

@@ -0,0 +1,65 @@
+package day18
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`5,4
+4,2
+4,5
+3,0
+2,1
+6,3
+2,4
+1,5
+0,6
+3,3
+2,6
+5,1
+1,2
+5,5
+2,5
+6,5
+1,4
+0,4
+6,4
+1,1
+6,1
+1,0
+0,5
+1,6
+2,0`)
+	assert.Equal(t, 22, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`5,4
+4,2
+4,5
+3,0
+2,1
+6,3
+2,4
+1,5
+0,6
+3,3
+2,6
+5,1
+1,2
+5,5
+2,5
+6,5
+1,4
+0,4
+6,4
+1,1
+6,1
+1,0
+0,5
+1,6
+2,0`)
+	assert.Equal(t, 0, r)
+}

2024/gareth/day19/day19.go

@@ -0,0 +1,90 @@
+package day19
+
+import (
+	"strings"
+)
+
+func Part1(input string) int {
+	towelPatterns, designs := parseInput(input)
+	result := countPossibleDesigns(towelPatterns, designs)
+	return result
+}
+
+func Part2(input string) int {
+	towelPatterns, designs := parseInput(input)
+	result := totalArrangements(towelPatterns, designs)
+	return result
+}
+
+func parseInput(input string) ([]string, []string) {
+	parts := strings.SplitN(input, "\n\n", 2)
+	towels := strings.Split(strings.ReplaceAll(parts[0], " ", ""), ",")
+	patterns := strings.Split(strings.TrimSpace(parts[1]), "\n")
+	return towels, patterns
+}
+
+func countPossibleDesigns(towelPatterns []string, designs []string) int {
+	memo := make(map[string]bool)
+	count := 0
+
+	for _, design := range designs {
+		if canConstruct(design, towelPatterns, memo) {
+			count++
+		}
+	}
+
+	return count
+}
+
+func canConstruct(design string, patterns []string, memo map[string]bool) bool {
+	if design == "" {
+		return true
+	}
+	if val, found := memo[design]; found {
+		return val
+	}
+
+	for _, pattern := range patterns {
+		if strings.HasPrefix(design, pattern) {
+			remaining := design[len(pattern):]
+			if canConstruct(remaining, patterns, memo) {
+				memo[design] = true
+				return true
+			}
+		}
+	}
+
+	memo[design] = false
+	return false
+}
+
+func totalArrangements(towelPatterns []string, designs []string) int {
+	memo := make(map[string]int)
+	total := 0
+
+	for _, design := range designs {
+		total += countWays(design, towelPatterns, memo)
+	}
+
+	return total
+}
+
+func countWays(design string, patterns []string, memo map[string]int) int {
+	if design == "" {
+		return 1
+	}
+	if val, found := memo[design]; found {
+		return val
+	}
+
+	totalWays := 0
+	for _, pattern := range patterns {
+		if strings.HasPrefix(design, pattern) {
+			remaining := design[len(pattern):]
+			totalWays += countWays(remaining, patterns, memo)
+		}
+	}
+
+	memo[design] = totalWays
+	return totalWays
+}

2024/gareth/day19/day19_test.go

@@ -0,0 +1,35 @@
+package day19
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`r, wr, b, g, bwu, rb, gb, br
+
+brwrr
+bggr
+gbbr
+rrbgbr
+ubwu
+bwurrg
+brgr
+bbrgwb`)
+	assert.Equal(t, 6, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`r, wr, b, g, bwu, rb, gb, br
+
+brwrr
+bggr
+gbbr
+rrbgbr
+ubwu
+bwurrg
+brgr
+bbrgwb`)
+	assert.Equal(t, 16, r)
+}

2024/gareth/day19/input.txt

@@ -0,0 +1,402 @@
+rrgbg, rgguubg, rbru, rb, rrrw, wbu, gbgb, uururg, ubru, rugb, bbru, b, rggurg, wgru, bgrwb, rrgubg, ubrrbg, wgurru, rrrrw, rbrwu, wubwb, wrbbr, bgbu, brrww, brg, gbwu, wrubuur, gur, grbr, gruwrrbg, bgwr, wgugbgb, rwbru, wuwr, rrg, ruwg, rgwgr, ubu, wbr, bwg, gbu, bgrwrb, wwrw, bb, gr, rug, grr, ubwb, rbruwbu, guggug, ugu, rwbuu, bbur, wbrww, wubw, br, gruu, gwr, wrrwwu, wug, bgu, bgb, wugb, grb, rbbg, grgbwgb, rwu, bwrbb, uwrbbru, bbu, wrg, rwg, ggbgbg, wbwru, wrgrw, bburr, bgr, rgbg, bwwwugrb, uwu, rwuwrg, gguburu, uwubwu, wb, wgguug, ugrbw, rbgu, rwwu, ggbbgb, gw, wgg, rrw, uurg, uubg, bgurgb, uwgbr, wbrwu, rrbb, rww, bwgb, uugru, ggrbub, wubgw, rwwugr, uuwur, burbrg, bbr, ggb, wgr, gwbgw, rrbu, wuwwrwb, rbbr, uubw, buuu, ubbwggu, brr, urguww, uggwwgw, ugw, ug, rub, grrrwu, wurburgg, wwww, ruu, wrb, rrur, urggr, bwbwwwrg, wwbu, bbg, uwb, ggugu, gbbr, rbrgw, bg, bbuu, uwrgrg, ggbwrgw, wwgwugr, wgbwuwb, gbrwg, bbw, wwrgu, rgrwrbwb, wwwg, gugbgbg, bwrwub, rw, gbb, ggw, rrb, urrbbwb, urbu, grg, rbugggb, bruwg, uubgwgw, bw, uubgu, rru, rwww, gu, wrbrg, guu, wgu, ruuru, wubrrg, brugrg, uuggb, wrurg, rgb, rbu, urg, buw, grwbg, gwuw, grbbg, wuwu, gbgbbw, uugrwrww, wbguub, grrgbug, u, uug, uwr, wrwb, gbg, bru, wwg, bbwur, bbbbbbbw, bugbb, rwurrgr, wwb, ugbbw, bug, grgg, bgwgrrb, uggu, rurguru, wwr, rbw, ubwwgw, wrrw, rrbg, g, rgrbub, gruggw, bur, ubgb, bgg, uwur, ur, bbbwb, gwbu, wuww, uruuuubb, wbru, ugggg, gbuu, rgg, wwwug, gbrwgg, guwgr, urw, wbur, bu, rur, rrubr, ugb, ubrgrb, rbbgg, rbwrg, rggw, rguug, wwu, uur, wrrguggu, brbb, bwwwbr, guw, gugw, wgubwu, rrr, ub, ru, brrbbruw, bwwgrrbb, rubgu, uggwwg, wbb, rwr, r, ruuu, wbggg, wwwu, grbrb, rrrrr, ruwb, wuuw, rbbb, ugg, wbg, rguwr, wbw, wbuwg, ubbgrbb, urugu, rbubw, wrgwuuwu, grw, ubbbu, bwurb, rwuu, rgbbwur, urbuu, uww, wuw, bwurgu, wur, wuwwrbur, wwuu, wbgw, grbbbw, wuub, urb, wuuguuwg, wg, gwrgr, gbug, gbrbw, rwgg, brbbu, bwww, wrbbbu, wwgbggb, burug, gww, ubgrrb, bgw, rgbb, brb, wbuu, brw, ggrbrbwg, uwruw, wrgurrbb, guwrgu, rr, ugggrbr, bgrgg, urgbrbrb, wrw, wwubggu, ugurwg, grrg, bwrb, rrgwuuw, rrru, wurg, bgurwu, rgurbb, uuub, uuwb, rrrg, wrgrrrww, uwg, bgbguu, wrgwb, wwwru, rg, rrurwur, urrbb, bww, rrwwbbb, ubr, wgrbu, gru, ubg, gb, ggr, gbwbwru, uuw, rbb, gugwrg, gwb, bbb, rgrggw, uw, wggbbg, rwgubgb, gwbw, brrr, gugbwu, rwrr, uuuwbb, ugrrr, rgu, wubrwr, wrr, bwb, bwbgurb, rrrub, wub, rwgrug, rurb, gwrgrbr, rbrwbb, wwrgbg, urr, bwu, bwgu, rbuuw, bbub, wbbwubu, ggg, wbwwgwb, buwbg, wwwuru, rbg, gubugg, gbwb, www, rbr, ubur, grbbw, wgw, gbw, wgrw, rguuuu, rwb, gbrw, bbbb, gururbb, rbggwu, bub, bgbr, gurb, rrbgrb, rurwb, ugr, wgwrg, ruw, bgrr, gwu, gbr, uwugwru, wru, wr, ugbruw, grbubb, gwg, gwggurg, gugbr, ugubbgb, uwrw, uru, bwr, rgr, rbgrwg, buuw, ugbur, urgub, wurrrgww, rgguuwru, burr, rgw, rbruw, rwbwbbr, bwguw, uub, wgb, rgur, ubb, urwg, rwgww, wgub, rwwrgu, gg, rgug, gub, bggr, uuu, uu, rbug
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2024/gareth/main.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"aoc2024/day04"
+	"aoc2024/day09"
 	"fmt"
 	"os"
 	"time"
@@ -9,9 +9,11 @@ import (
 
 func main() {
 	start := time.Now()
-	data, _ := os.ReadFile("day04/input.txt")
-	fmt.Printf("part 1: %d\n", day04.Part1(string(data)))
-	fmt.Printf("part 2: %d\n", day04.Part2(string(data)))
+	data, _ := os.ReadFile("day09/input.txt")
+	fmt.Printf("part 1: %d\n", day09.Part1(string(data)))
+	fmt.Printf("part 2: %d\n", day09.Part2(string(data)))
 	elapsed := time.Since(start)
 	fmt.Printf("Execution time: %s\n", elapsed)
 }
+
+// 6320029754031

2024/go/day10/day10.go

@@ -0,0 +1,103 @@
+package day10
+
+import (
+	"adventofcode2024/utils"
+	"adventofcode2024/utils/grid2d"
+	"adventofcode2024/utils/inputs"
+	"fmt"
+)
+
+type Position struct {
+	height int
+	summit bool
+}
+
+func Part1(input string) int {
+	score := 0
+	i := 0
+	grid := inputs.ToGrid2D(input, "\n", "", Position{height: -1}, func(c string) Position { return Position{summit: false, height: utils.MustAtoi(c)} })
+	fmt.Println(grid.StringWithFormatter(formatter))
+	for y := 0; y < grid.SizeY(); y++ {
+		for x := 0; x < grid.SizeX(); x++ {
+			position := grid.Get(x, y)
+			if position.height != 0 {
+				continue
+			}
+			wipe_summit(grid)
+			score += getScore(x, y, 0, 0, grid)
+			fmt.Printf("Trailhead %d (%d,%d) paths: %d\n", i, x, y, score)
+			i++
+		}
+	}
+	return score
+}
+
+func Part2(input string) int {
+	score := 0
+	i := 0
+	grid := inputs.ToGrid2D(input, "\n", "", Position{height: -1}, func(c string) Position { return Position{summit: false, height: utils.MustAtoi(c)} })
+	fmt.Println(grid.StringWithFormatter(formatter))
+	for y := 0; y < grid.SizeY(); y++ {
+		for x := 0; x < grid.SizeX(); x++ {
+			position := grid.Get(x, y)
+			if position.height != 0 {
+				continue
+			}
+			wipe_summit(grid)
+			score += getScore2(x, y, 0, 0, grid)
+			fmt.Printf("Trailhead %d (%d,%d) paths: %d\n", i, x, y, score)
+			i++
+		}
+	}
+	return score
+}
+
+func formatter(p Position, x int, y int) string {
+	return fmt.Sprintf("%v", p.height)
+}
+
+func wipe_summit(grid *grid2d.Grid[Position]) {
+	for y := 0; y < grid.SizeY(); y++ {
+		for x := 0; x < grid.SizeX(); x++ {
+			pos := grid.Get(x, y)
+			if pos.height == 9 && pos.summit {
+				pos.summit = false
+				grid.Set(x, y, pos)
+			}
+		}
+	}
+}
+
+func getScore(x, y, level, score int, grid *grid2d.Grid[Position]) int {
+	directions := [][]int{{0, 1}, {0, -1}, {1, 0}, {-1, 0}}
+	for _, dir := range directions {
+		x1 := x + dir[0]
+		y1 := y + dir[1]
+		nposition := grid.Get(x1, y1)
+		if level == 8 && nposition.height == 9 {
+			score++
+		}
+		if nposition.height != level+1 {
+			continue
+		}
+		score = getScore(x1, y1, nposition.height, score, grid)
+	}
+	return score
+}
+
+func getScore2(x, y, level, score int, grid *grid2d.Grid[Position]) int {
+	directions := [][]int{{0, 1}, {0, -1}, {1, 0}, {-1, 0}}
+	for _, dir := range directions {
+		x1 := x + dir[0]
+		y1 := y + dir[1]
+		nposition := grid.Get(x1, y1)
+		if level == 8 && nposition.height == 9 {
+			score++
+		}
+		if nposition.height != level+1 {
+			continue
+		}
+		score = getScore2(x1, y1, nposition.height, score, grid)
+	}
+	return score
+}

2024/go/day10/day10_test.go

@@ -0,0 +1,31 @@
+package day10
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`89010123
+78121874
+87430965
+96549874
+45678903
+32019012
+01329801
+10456732`)
+	require.Equal(t, 36, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`89010123
+78121874
+87430965
+96549874
+45678903
+32019012
+01329801
+10456732`)
+	require.Equal(t, 81, r)
+}

2024/go/day10/input.txt

@@ -0,0 +1,56 @@
+43217654309879876104563234589896761012345656543098901001
+34108903212368123233472105676787851299856567832187812652
+45677814301457014312986345589876940387765678943046543743
+56789325100876525800345276430105432456566589858956769821
+65438456912963436901236187621234501223455410767349874430
+74321067803451107898547093412012982016764323101210143561
+89412210987430210789698892102123673107895214589723652678
+78601521856521345678721743089034543212345605679854781789
+66789430545678934505430654898745672212236765434765690878
+55676545038943213216765989601654981300129870121012345969
+46543216127657804389834808762347690456789983498141456452
+65454307233456934870126712354878765565210012507230987321
+54567898332110125961015645403969234674323215616546576010
+65658983021001876854324106912452128789321308723455678901
+76543212137892965348933217832141089873410419678964987652
+89862901236543501267018363101033210565566566569873788543
+89871876544345652106529854892123521454479877654012699830
+78100703454278743212434763763014672343287778943210581021
+65210212565189858906763212654985785650198961212101432010
+54321056876012567875898708783476698763267890303215678321
+87012567988703489874345679692676543294986725456574329478
+96543498589876530365210189501987650187675216987687610569
+01234567651010921234501076401236501010564307678596789876
+10389830532329854376542345321545692323403018789455430965
+21456721013456765289031234980098783410912129670320121054
+92505432565421010109120345671107654567823451061210120123
+87615443478302341018750134543234541050765962552121234984
+34322342189219650129665234789432132021894873443010965673
+45451056077828743234574343276543032134703210523457876532
+51069987456943104545987650167898749865612309610765454101
+32678678345652210698092156756547056764303458779890363232
+43010589232781306787183045876532178965210569888211274321
+56923432101090458989254234923421369878934678898302989430
+87889211078764567876360143010030450767125986567401276589
+96676305669653478985478652102141341458076803456564345676
+45435434734522780340349760123456232349883712678178737894
+80127821821011091211299854354987101016792103549069016323
+92346940910329654304587121267807652345013401232108925412
+81055432101458765643671010871018947654324589543987432101
+76567789023467010782532346965425638945695678654986540012
+05498654110567821891047897212334721032786014345678901098
+12387013223489932346156598101549889821012823216765212387
+03456323016576542345692367210678710701296954907854323456
+12345465437895431016781450123467623654387867878985401501
+21089870124326528701670101874345634565676541045621032012
+32189210065017019632543210965236730120545632456734548743
+43498349876298903545450143050159821321234012349895699654
+34567658389101232123469052101567634489234510106786789985
+99876501276788943016578769872498105672105621215021058876
+87035432365897654107689898763343234321678789334134567655
+70129641034781089898791099854232145690569245493254321567
+63238701123654178718982387763156056781410126787655010498
+54345652321073265001073456012047189872328901098546710327
+34568543434589874132569895145438976987437812361239891210
+21879654898678013203456701236327805456546521450967890123
+30968745467654320112345210987610112345545430567856543234

2024/go/day11/day11.go

@@ -0,0 +1,76 @@
+package day11
+
+import (
+	"adventofcode2024/utils"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func Part1(input string) int {
+	stones := strings.Fields(input)
+	for i := 0; i < 25; i++ {
+		n_stones := []string{}
+		for _, stone := range stones {
+			switch {
+			case stone == "0":
+				n_stones = append(n_stones, "1")
+			case len(stone)%2 == 0:
+				d1 := strconv.Itoa(utils.MustAtoi(stone[0 : len(stone)/2]))
+				d2 := strconv.Itoa(utils.MustAtoi(stone[len(stone)/2:]))
+				n_stones = append(n_stones, d1)
+				n_stones = append(n_stones, d2)
+
+			default:
+				n_stones = append(n_stones, fmt.Sprintf("%d", utils.MustAtoi(stone)*2024))
+			}
+		}
+		stones = n_stones
+	}
+	return len(stones)
+}
+
+func Part2(input string) int {
+	stones := strings.Fields(input)
+	smap := make(map[string]int)
+	smap2 := make(map[string]int)
+
+	for _, stone := range stones {
+		smap[stone] = 1
+	}
+	for i:=0;i<75;i++ {
+		for k, v := range smap {
+			switch {
+			case k == "0":
+				smap2["1"] = smap2["1"] + v
+			case len(k)%2 == 0:
+				d1 := strconv.Itoa(utils.MustAtoi(k[0 : len(k)/2]))
+				d2 := strconv.Itoa(utils.MustAtoi(k[len(k)/2:]))
+				smap2[d1] += v
+				smap2[d2] += v
+			default:
+				k2 := fmt.Sprintf("%d", utils.MustAtoi(k)*2024)
+				smap2[k2] += v
+			}
+		}
+		smap = CopyMap(smap2)
+		smap2 = make(map[string]int)
+	}
+	count := 0
+	for _, v := range smap {
+		count += v
+	}
+	return count
+}
+
+func CopyMap(original map[string]int) map[string]int {
+    // Create a new map to hold the copy
+    copied := make(map[string]int)
+    
+    // Copy each key-value pair from the original map to the new map
+    for key, value := range original {
+        copied[key] = value
+    }
+    
+    return copied
+}

2024/go/day11/day11_test.go

@@ -0,0 +1,17 @@
+package day11
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1("125 17")
+	require.Equal(t, 55312, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2("125 17")
+	require.Equal(t, 55312, r)
+}

2024/go/day11/input.txt

@@ -0,0 +1 @@
+3 386358 86195 85 1267 3752457 0 741

2024/go/day12/day12.go

@@ -0,0 +1,146 @@
+package day12
+
+import (
+	"adventofcode2024/utils/grid2d"
+	"adventofcode2024/utils/inputs"
+	"fmt"
+
+)
+
+type Plot struct {
+	crop    string
+	visited bool
+	region  int
+	x		int
+	y 		int
+}
+
+type Region struct {
+	plots      []Plot
+	crop       string
+	id         int
+	area       int
+	perimteter int
+	sides      int
+}
+
+func Part1(input string) int {
+	var val int
+	region_id := 0
+	regions := make(map[int]Region)
+	grid := inputs.ToGrid2D(input, "\n", "", Plot{}, func(c string) Plot { return Plot{crop: c, region: -1} })
+	fmt.Println(grid.StringWithFormatter(formatter))
+	for y := 0; y < grid.SizeY(); y++ {
+		for x := 0; x < grid.SizeX(); x++ {
+			var region Region
+			plot := grid.Get(x, y)
+			if plot.visited {
+				continue
+			}
+
+			region_id++
+			region = Region{id: region_id, area: 1, crop: plot.crop, sides: 4}
+			plot.region = region_id
+			plot.visited = true
+			plot.x = x
+			plot.y = y
+			grid.Set(x, y, plot)
+			region.plots = append(region.plots, plot)
+			regions[region_id] = region
+
+			try_neighours(grid, &region, x, y)
+			regions[region.id] = region
+		}
+	}
+	for _, region := range regions {
+		val += region.area * region.perimteter
+	}
+	return val
+}
+
+func Part2(input string) int {
+	var val int
+	region_id := 0
+	regions := make(map[int]Region)
+	grid := inputs.ToGrid2D(input, "\n", "", Plot{}, func(c string) Plot { return Plot{crop: c, region: -1} })
+	fmt.Println(grid.StringWithFormatter(formatter))
+	for y := 0; y < grid.SizeY(); y++ {
+		for x := 0; x < grid.SizeX(); x++ {
+			var region Region
+			plot := grid.Get(x, y)
+			if plot.visited {
+				continue
+			}
+
+			region_id++
+			region = Region{id: region_id, area: 1, crop: plot.crop}
+			plot.region = region_id
+			plot.visited = true
+			plot.x = x
+			plot.y = y
+			grid.Set(x, y, plot)
+			region.plots = append(region.plots, plot)
+			regions[region_id] = region
+
+			try_neighours(grid, &region, x, y)
+			regions[region.id] = region
+		}
+	}
+	for _, region := range regions {
+		val += region.area * get_sides(grid, region)
+	}
+	return val
+}
+
+func formatter(p Plot, x int, y int) string {
+	return fmt.Sprintf("%v", p.crop)
+}
+
+func try_neighours(grid *grid2d.Grid[Plot], region *Region, x int, y int) {
+
+	directions := [][]int{{0, 1}, {0, -1}, {1, 0}, {-1, 0}}
+	plot := grid.Get(x, y)
+	perimeters := 0
+
+	for _, dir := range directions {
+		x1 := x + dir[0]
+		y1 := y + dir[1]
+		nplot := grid.Get(x1, y1)
+
+		if nplot.crop == plot.crop {
+			if !nplot.visited {
+				region.area++
+				nplot.visited = true
+				nplot.region = plot.region
+				nplot.x = x1
+				nplot.y = y1
+				grid.Set(x1, y1, nplot)
+				region.plots = append(region.plots, nplot)
+				try_neighours(grid, region, x1, y1)
+			}
+		} else {
+			perimeters++
+		}
+	}
+}
+
+func get_sides(grid *grid2d.Grid[Plot], region Region) int {
+	sides := 0	
+	corners := [][][]int{{{-1, 0}, {0, -1}, {-1, -1}},
+					     {{+1, 0}, {0, -1}, {+1, -1}},
+					     {{-1, 0}, {0, +1}, {-1, +1}},
+					     {{+1, 0}, {0, +1}, {+1, +1}}}
+	for _, plot := range region.plots {
+		for _, o_corners := range corners {
+				c1 := grid.Get(plot.x + o_corners[0][0], plot.y + o_corners[0][1])
+				c2 := grid.Get(plot.x + o_corners[1][0], plot.y + o_corners[1][1])
+				c3 := grid.Get(plot.x + o_corners[2][0], plot.y + o_corners[2][1])
+				if c1.crop != region.crop && c2.crop != region.crop {
+					sides++
+				} else if c1.crop == region.crop && c2.crop == region.crop && c3.crop != region.crop {
+					sides++
+				}
+		}
+	}
+	return sides
+}

2024/go/day12/day12_test.go

@@ -0,0 +1,29 @@
+package day12
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`RRRRIICCFF
+RRRRIICCCF
+VVRRRCCFFF
+VVRCCCJFFF
+VVVVCJJCFE
+VVIVCCJJEE
+VVIIICJJEE
+MIIIIIJJEE
+MIIISIJEEE
+MMMISSJEEE`)
+	require.Equal(t, 1930, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`AAAA
+BBCD
+BBCC
+EEEC`)
+	require.Equal(t, 80, r)
+}

2024/go/day12/input.txt

@@ -0,0 +1,140 @@
+UUUUUUUUUUUUUUUUUUUDQQQQQQQOOOOOHHSSSSSYYYYYYYYGGGGNNNNNNNNTTTTTTTTTTTTTTDDDDDDDDDDDDDDDDDDNNNCCNJJJJOOHHHDDDDDDDDDDDDDDDDDDXXMBBBBMMCCCCCCC
+UUUKUUUUUUUUUUUUUDDDDDDDQQQOOOOOOOOOSSSSSYYYYYYYYGGGGGNNNNTTTTTTTTTTTTTTTTTTTTDDDDDDIIDDDNNNNNCCNJJJOOOHDDDDDDDDDDXDDDDDDDMMMXMMMMMMMMCCCCCC
+UUUKKUUUUUUWUUUUUUDDDDDDDDDROOOOOOOWWSSSSYYYYYYYGGGGGGGQNTTTTTTTTTTTTTTTTTTTTTDDDDDDDIDIINNNNLNNNNOOOOODDDDDDDDDDXXDDDDDDDMMMMMMMMMMMMCCCCCC
+UUKKUUKKXUUUUUUUUDDDDDDDDDDDDOOOOOOOOYSSSSSYYYYYGGGGGGQQNNTTTTTTTTTTTTTTTTTTTTDDDDDIDIIIINNNNNNNNNNOOOODDDDDDDXDDXXDDDDDDDMMMMMMMMMMMMMMCCCC
+UUKKUKKKXXUQQQQUUDDDDDDDDDDDDOOOOOOOOYYYYYYYYYYYGGGGGQQIINTTTTITTTTTTTTTTTTTTTTDDDIIIIIIIINNNNNNNNNOOODDDDDDDDXXXXXXDDDDDMMMMMMMMMMMMFFFFCCC
+UKKKKKKKXKAWWWWWDDDDDDDDDDDDDOOOOUUOYYYYYYYYYYYYGGGGQQQQIIDITIIIITTTTTTTTTTTTTDDDDIIIIIIINNNNNNNNLLLLODDDDDDXXXXXXXXDXDDDMMMMMMMMMMMMFFFFCCC
+KKKKKKKKKKKWWWWKDPPDDDDDDDWWWOOOOOUUYYYYYYYYYYYYYGRQQQQQIIIIIIIIITTTTTTTTTTTDDDDDDIIIIIIIIINNNNNNNLLLLLDDDDDXXXXXXXXXXDDDDDMMMMMMMMMMFFFCCCC
+KKKKKKKKKKWWWWWWDDDDDDDDDSWWWOWOOOOUYYAYYYYYYYYYYYQQQQQIIIIIIIIOIITTTTTTTTTTDDDDIIIIIIIIIIINNNNNLNNNLLLDDDDDDXXXXIXYDDDDDDDMMMMMMMMMMFFFCFCC
+KKKKKKKKWWWWWWWWSSDSDDDDDSSWWWWOOOOUYYAYYYYYYYYYYQQQQQQIIIIIIIIIITTTTTTTTTTDDDIIIIIIIIIIIINNNNNNLLLLLLLDDDDDDXXXXIXYDDDQDDDMMMMMMMUMFFFFFFFC
+KKKKKKKWWWWWWWWWSSSSDSDSSSSWWWWWOOOUYYYYYYYYYYYYYYQQQQIIIIIIIIIIIIIXXXXXTTTTDIIIIIIIIIIIKINNLNNNLLLLZLLLLDDVDXXXXXYYDDQQDDTMMYYYMMUUUFFFFFCC
+KKKKKKKKWWWWWWWWWWSSSSSSSSSSWWWWWWOUYPPPPPYYYYYYQQPQQQQAIIIIIIIIISSXXXXXXXTTDIIIIIIIIIIIIIIILLLLLLLLZZLLLDDDXXXXXXXYYDXXXYMMMYYYYMPUUFFFFFFC
+KKKKKKKKWWWWWWWWWWBBBBSSSSSWWWWWWWSSPPPPWWWWWWAYPPPPQAAAAITTIIIIIXXXXXXXUTTXXXIIIIIIIIIIIIIOLLLLLLLLZZLLLLLLLLXXXXYYXXXXXXXXRPPPPPPPPPFFCCFC
+KKKKKKDWWWWWWWWWWWDDBBBSSSSWWWWWWWWSSPPPPWWWWWWWPPPPPAAAAIIIIIIIIXXXXXXXXXDXXIIIIIIIIIIIIIIOLLLLLLLZZZZZZLLLLNXNNXNYYYXXXXXXPPPPPPPPPPFFCCCC
+KKKKKKWWWWWWWWWWWWBBBBBBBSSSWWWWWWWSSSSPPWWWWWWWPPPPPAAAAAAIIIIIIIXXUUUUUUXXXXIIIIIIIIIIIIIILLLLLLLZZZZZZZLLLNNNNNNYYYXXXXXXPPPPPPPPPPCFCCCC
+KTKQQKWWWWWWWWWWBWBBBBBBBSBSWWWWWSSSSSPPPWWWWWWWWPPPPPPAAFAIIYYYUUUUUUUUUUUXXXQQQIIIXXXXXXXXXXLLLLLZZZZZZZZZLNNNNNNYYXXXXXXXPPPPPPPPPPCCCCCC
+QQKAQQWWWWWWWWWWBWBBBBBBBBBSWWWSSSSSSSSPPWWWWWWWPPPPPPPPPPYYYYYYUUUUUUUUUUUQXQQQQQQIXXXXXXXXXXLZLLEZZZZZZZZZLNNPNNNYYXXXXXPXPPPPPPPPPPPCCCCC
+QQQQQQQWWWWWWWWWBBBBBBBBBBVWWWDDSSSSSSSSSPWWWPPPPPPPPPPPPPYYYYYYUUUUUUUUUUUUUUUUQQIIXXXXXXXXXXLZZZZZZZZZZZZLLUUUUUUUUXXXXXPPPPPPPPPPPPCCCCCC
+QQQQQQQQWWWWWWWWBBBBMMMBBBMWWWDSSSSSSSSSSPPPPPPPPPPPPPPPYYYYYYYBYYXXXXXUUUUUUUUUOIIIIZZZZZLLLZZZZZZZZZZZZZZZZIIIIUUUUUXPPXPPPPPPPPPPYYCCCCCC
+QQQQQQQQQWWZZZWMMMMMMMMMBMMWWDDSSSSSSSSSSSPPPPPPPPPPPPPPYYYYYYYYYXXXXXXUUUUUUUUUOOIIIZZZZLLLLLZZZZZFFFFFFFFFHHHIUUUUUPPPPPPPYPPYPPPYYYCCCCCC
+QQQQQQLQQQWWZZZMMMMMMMMMMMHHWSSSSSSSSSSSPPPPPPPPPPPPPPYYYYYYYYYYXXXXXXXUUUUUUUUUOIIIIIZLLLLLLZZZZZZFFFFFFFFFHHHIUMUUUPPPPPPPYYYYYYYYYYYCCCYC
+QQQQQLLQLLZZZZMMMMMMMMMMMMMMWSSSSSSSSSSSPPPPPPPPPBYPPPYYYYYYYYYYYYXXXXXUUUUUUUUUIIIIIIIILLZZZZZZZZZFFFFFFFFFHHFFFFQUULLPPPPPQYYYYYRYYYYYYYYY
+QQQLLLLLLLLZZZMMMMMMMMMMMMMMNMSSSSSSSSSSVVPPPPPPBBYYYYYYYYYYYYYYYYYXXXXUUUUUUUUUOIIIIILLLLZZZZZZZZZFFFFFFFFFFFFFFFFUUMMPPPPPYYYYYYYYYYYYYYAA
+QQQLLLLLLLLZZZZMMMMMMMMMMMMMMMSSSSSSSSSSVVPPPBBBBBBYYYGGGGGGGGGYYYYYYYYUUUUUUUUUIIIIILLLLZZZZZZZZZZFFFFFFFFFFFFFFFFMMMOPPPPGYYYYYYYYYYYYYYYA
+QQLLLLLLLLZZZZMMMMMMMMMMMMMMMSSSSSSSSRRSVVVVVVBBBBBYYYGGGGGGGGGYYYYYYYXUUUUUUUUUIIIIILLLLLZZZZZZZZZZZHHZZHHFFFFFFFFMMMMMPPPYYYYYYYYYYYYYYYYY
+QQLLLLLLLLLZZZMMMMMMMMMMMMMMMSSSSSSRRRRSVVVVVBBBBBBBYYGGGGGGGGGYYYYYYEEUUUUUUUUUIIIIILLLLLBZZZZZZZZZZHHHHHHFFFFFFFFMMMMMMPIIYYYYYYYYYYYYYYYY
+QQQLLLLLLZZZZZZMMMMMMMMMMMMMFSSSSSSRRRRRRVVVVVVVVBBYGGGGGGGGGGGYYXYYYEEEEEEEEEEEIEIILLLLLLZZZZZZZZZZZZHHHHHFFFFFFFFMMMMMMPPIIYYYYYYYYYUUYYYU
+QQQQQQGLLLLPPPMMMMMMMMMMMMMMMSRSSSRRRRRRVVVVVVVVBBBQGGGGGGGGGGGGGGYXXXEEEEEEEEEEEEELLLLLHZZZZZZZZZZZXZHHHHHFFFFFFFFMMMMIIIIIYYYYYYYYYYUUUUYU
+QQQQQQQQQLKPPPPIIMMMMMMMMMUUUURRSRRRURRRVVVVVVVVVBQQGGGGGGGGGGGGGGXXXXXEEEEEEEEEJEELLLHHHHHHHHHZZDDZZZHHHHHFFFFFFFFQMMMQQIIIIYUUUUYYYYUUUUUU
+JJQQQTQQQKKKPPPPPQQMUUMUUUUUURRRSRUUURRRUUUVVVUVVVQQGGGGGGGGGGGGGGXXXXXEEEEEEEEEJJJLLHHTTHHHHHHYYYDDDZHHHHHFFFFFFFFQMMMQQQQQUUUUUUUUUUUUUUUU
+JJJJQTTQKKKPPPPPPQQQUUUUUUUCURRRRRRUUURRUUUVUUUUVVQQGGGGGGGGGGGGGGXXXXZEEEEEEEEEJJJJJHTTTTHHHHHHYDDDDHHHHHHMMQQQHQQQQMQQQQQUUUUUUUUUUUUUUUUU
+JJJJJTTTPKKPPPPPPPQUUUUUUUUUUURRRRRRUUUUUUUVUUUUUVVQGGGGGGGGGGGGGGXXXXZEZZZZEEEJJJJJTTTTTTTTHHHHYYYMMHHHMHHMMMQQQQQQQQQQQQQUUUUUUUUUUUVUUUUU
+JJJJJTTPPPPPPPPPPPPUUUUUUUUUURRRRRRUUUUUUUUUUUUUUVVUGGGGGGGGGGGGGGXXRRZZZZZZEEDDDJJTTTTTTTTHHHHHYMMMMHMHMMMMMMMQLLLQLQQQQQQUUUUUUUUUVUVVUUUU
+JJJJJJJPPPPPPPPPPPUUUUUUUUUUURRRRPRRRUUUUUUUUUUUUVVUGGGGGGGGGGGGGGZRRRRRRRDDDDDDDJJJZTTTTTTTHHYYYYMMMMMHHMMMMMLLLLLLLLQQSQQSSUUUUBBBVVVVVUUU
+JJJJJBBPPPPPPPPPPPUUUUUUUUUUUURRRPPCCUUUUUUUUUUUUUUUGGGGGGGGGGGGZZRRRRRRRBDDDDDDDJJJTTTTTTTTYHYYYYYYUMMMHMMMMLLLLLLLLLLLSSSSUUUUBVVVVVVZVUUU
+JJJJBBBBPPPPPPPPPPUUUUUUUUUUUURRPPPCCGUUUUUUUUUUUUUUUGGGGGGGGGGGZZZRRRRRRRYDDDDDDJJTTTTTTTTTYYYYYYYYYMMMMMMMMMMMLLLLLLLSSSSSSUUUBVVVVVVVVVUU
+JJJJBBBBPPPPPPPPPPUUUUUUUUUUUURUPPPCCCCCCUUUUUUUUUUUUGGGGGGGGGGGZZZRRRRRRRRRRRRDDDJTTTTTTTTYYYYYYYYYMMMMMMMMMMMLLLLLLLLSSSSSSSSSEEEEVVVVVVVU
+JJJJBBBBQQQPPPPPPPUUUUUUUUUUUUUUPPCCCCCCCUUUUUUUUUUUUGGGGGGGGGGGZZZRRRRRRRRRRRRDDDTTTTTTTTTTYYYYYYYOYMMMMMMMMMMMMMLLLLLLSSSSSSEEUEEEVEEVQQVQ
+JJJJJBBBBQQQPPPPUUUUUUUUUUUUUUPPPPCCCCCCCCCFFUUUUUUUQGGGGGGEEKKKKZZRRRRRRRRRDDDDHDTTTTTTTTTTTTYYYYYYYMMMMMMMMMMMMMMMSSSSSSSSSSEEEEEEEEQQQQQQ
+JJJJBBBBBQQQQQPPUHHWUUUUUUUUUUPPPPCCCCCCCCCFFUUEUUMUQGGGGGGEEEKKKZRRRRRRRRRRRHDDHDDDTTBTTTTTTTYYYYYYYYMMMMMMMMMMMMSSSSSSSSSSSEEEEEEEEEEQQQQQ
+JJHBBBBBQQQQQPPPPHHWWUUUUUUUUPPPPPCCCCCCCCCCAUUEUUUUQGGGGGGEKKKKPRRRRRRRRRRRRHHHHHDTTTTTNTTTTTTTXYYAAYYMMMMMMMMMMMGGSGGGOOOSOOOEEEEEEEEEQQQQ
+JHHHBBBBQQQQQPPPPHHWWUUUWWWUPPPPPPPPCCCCCCAAAAAEEEUUUGGGGGGCKKKKKKKRRRRRRRRRRHHHHHDTWWTTNNNTTTXXXYAAAAMMMMMMMMMMMGGGGGGJOOOOOOEEEEEEEEEEQQQE
+HHHHBBBUQQQQQPPPPWHWWWUWWWWUPPPPPPPPPPCCCCAAAAAEEEEEEGGGGGGCKKKKKKKRRRRRRRRRGGHHHHHHWWNNNNNNTXXXXXXAAAAAMMMMMMMMGGGGGGJJOOOOOOEEEEEEEEEEEQEE
+HHHHHBBBBQQQPPPPWWWWWWWWWWWWWPPPPPPPPPCCCAAAAAEEEEEECCCCCCCCKKKUKKRRRRRRRRRRRGHHHHHWWDDDNNNNTTXNNNNVAAAAAMWMMMMMGGGGGGJJOOOODEEEEEEEEEEEEEEE
+HHHHHHHHUQQUPPPPWWBWWWWWWWWWWPPPPPPPPPCCAAAAAAAEEEEECCCCCCCCCKKKKRRRRRRRREKKKKKDHHHWDDDDNNNNNNNNNNNNNAAAAAMMMMPMMEGGGEOOOOOOEEEEEEEEEEEEEEEE
+HHHHUHHHUQQUUPPPSUUWWWWWWWWWWPPPPPPPPPPCJPBAATTTTTEEEERRCCCCRRKKKKRRRRRRRRKKKKKKNHHWDDDDDNNNNNNNNFFNNAAAAAAAAMPMEEGGGEOOOOOOVVVEEEEEEEEEEEEE
+HHHHUUUUUUUUUUVVUUWWWWWWWWWWWPPPPPPPPPPPPPAATTTTTTEEEERRUCCCCRKKKKKKRRRKKKKKKDDJDDDWDDDDDNNNNNNNNNNNAAAAAAAAAMMAEEEGGEEOOOOOOVVSESSSSEEEEEEE
+HHHHHUUUUUUUUUUUUUWWWWWWWWWWWPPPPPLTTPPPPPPTTTTTTTTTEERRRCCCCRRKKKKKRRKKKKKKKDDDDDDDDDDDDDDNNNNNNNNNAAAAAAAAMMAAEEEEGEEEEEOOVVSSSSSSSEEEEEEE
+HHHHHHHHHUUUUUUUUUWWWWWWWWWWLLLLLLLTTPPPPPPTTTTTTTTTEERRPCERRRRRKKKKKKKKKKKMKLDDDEDDDBBBBBBBNNNNNNNNNAAAAAAAAAAAAAEEEEEEEEOOVVSSSSSSSSSSEGGE
+HHHHHHHUUUUUUUUUXUWWWWWWWWWWLLLLLLLTTTPPPTTTTTTTTTTTERRRRRRRRRRRRKKKKKKKKMKMLLLDDDDDDBBBBBBBNNNNNNANAAAAAAAAAAAAAAEEEEEEEEEESSFSSSSSSSSSESGG
+HHHHHHHUUUUUUUUXXXXWWWWWWLLLLLLLLLTTTTTTTTQTTTTTTTTTTRRRRRRRRRRRKKMMKKKKKMMMMMLLDDDDDBBBBBBBNNNNNNNAAAAAAAAAAAAAAAKKEEEEEEEESSSSSSSSSSSSSSGG
+HHHHHUUUUUUUUUUXXXXXWWWXLLLLLLLLLLTTTTTQQQQTTTTTTTTTTTRRRRRRRRRRRKMMMKKKKMMMMMMDDDDDDBBBBBBBNNNNNNNNNAAAAAAAAAKKKKKKEEEEEEEEESSSSSSSSSQSNQGG
+HHHKKUUUUKUUUWWXXXXXXXXXLLLLLLLLLLQQQTTQQHQTQQQTTTTTTRRRRRRRRRRRRMMMMKKKKMMMMMMDDDDDDBBBBBBBDNNNNNNNBBBBBBBAAAAKKKKKKKEEEEEEEESSSSSSSSQQQQGG
+HHHHKKLKAKKUWWWXXXXXXXXXLLLLLLLLLLQQQTTQQHQQQQTTTTTTTRRRRRRRRRRRRMMMMMKMMMMMMMMQQDDDDBBBBBBBNNNNNNNNBBBBBBBAAAAKKKKKKEEEEEEEESSSSSSSSSQGQQGG
+HHHHHKKKKKKUWWWWWXXXXXXXXLLLLLLLLLQVQQQQQQQQQQQTTTTTRRRRRRRRRRRNNMMMMMMMMMMMMMMQQZDDDBBBBBBBBBBBBBNABBBBBBBAAAAKKKKKKEEEEEENEESSSSSSQSQQQQGQ
+HHHHKKKKKKKRWWWWWWXXXXXXXLLLLLLIILIQQQQQQQQQQQQQTTTTRRRRRRRRRRRNMMMMMMMMMMMMMMMQQZDDDBBBBBBBBBBBBBBBBBBBBBBAAAAKKKKKKEEEENNNNSSSSSSSQQQQQQQQ
+HMHHKKKKKKKRWWWWWXXXXXXXXLLLLLLIIIIQQQQQQQQQQQQQTTTRRRGRRRRRRRRNMMMMMMMMMMMMMMZQZZDDDBBBBBBBBBBBBBBBBBBBBBBAAAAAAKKKKEEENNNNNSSSNSSSQQQQQQQQ
+MMKKKKKKKKKWWWWWWXXXXXXXXLLLLLLLLIIIQQQQQQQQQQQQQQTRRRRKKRRRRRNNMMMMMMMMMMMMBBZZZZZZDBBBBBBBBBBBBBBBBBBBBBBAAIIAKKKKKKKENNNNNNNSNSSUUQQQQQQQ
+NMMMMKKKKKKWWWWWWWXXXXXLLLLLLLLLLLLIIQQQQQQQQQQQQEEERRIIKRRRRNNNMMMMMMMMMMMMMBZZZZZZZBBBBBBBBBBBBBBBBBBBBBBNIIIKKKKKKKKKKNNNNNNNNSUUQVQQQQQQ
+MMMKKKKKKKKWWWWWWXXXXXXXXRRRRJXXXLIIQQAQQQQQQQQQQEEEEEIIIIINNNNNNMMMMMMMMMMMBBZZZZZZZDSSBBBBBBBBBBBBBBBNNNEEIIIKKKKKIKKNNNNNNNNNNNQQQQQQQQQQ
+MFMIFFKKKKKKWWWWWWXXXXXXRRRRJJJXXQQQQQQQQQQQQQQQQEEEEEEEIINNNNNNNNNNMMMMMMMBBBBBZZZZZDZZBBBBBBBBBBBBBBBNNNIIIIIKKKIKIINNNNNNNNNNNQQQQQQQQQQQ
+FFBIFFFKKKKKWWWWWWXXXXXXWWRRRJJXXXXQQQQQQQQQQQQQQEEEEEIIIINNNNNNNNNNNMMMMMMMBBBCBZZZZZZZBBBBBBBBBBBNNNNNNIIIIIIIIIIIIINNNNNNNNNNNNNQQQQQQQQQ
+FFBBBFFFFKKKYWWWXXXXXXVWWWRRRJXXXXXXXQQQQIQQQUQQUUEUEEIIIIIIINNINNNNMMMMMBBBBBBBBBZZZZZZZZBBBBBBBBBIINNNNIIIIIIIIIIIIIIINNNNNNNNNNNNNHQQQQQQ
+FBBBBFFFFFFFFWWWXXXXXXXWWWRWWXXXXXXDDPPPQQUUUUUQUUUUIIIIIIIIIIIINNNNMMMMMBBBBBBBBBZZZZZZZZBBBBBBBBBINNNNNIIIEIIIIIIIIIIIINNNNNWNNNNNNHQZQQQQ
+BBBBBFFFFFFFEEEQXXXXXXXXWWWWWXWXXXXDDPPZZUUUUUUUUUUUIIIIIIIIIIIINNNNNNMBBBBBBBBBBBBZZZZZZZBBBBBBBBBIIIIEEEEEEIIIIIIIIIIIWWWWWUWWNWNNNNQZZDDD
+BBBBBFFFFFEEEEEQXNNXXXWWWWWWWWWWXDDDDQQUUUUUUUUUUUHBIIIIIIIIIIIBNNNNNNBBBBBBBBBBBBZZZZZZZZBBBBBBBBBIIIIIEEEEEIIIIIIIIIIIWWWWUWWWWWNNNNNZDDDD
+BBBBBBFFFFFEEEEEENNNNWWWWWXXXXXXXXXXDDDDDDDUUUUUUBBBIIIIIIIIIIIBNNNNNBBBBBBBBBBBBDBBZZZZZZBBBBBBBBBIIIIEEEEEEEEEIIIIIIIWWWWWWWWWWWNNNZZZDDDD
+BBBBBBBEFFFEEEEEENENNNWWWWXXXXXXXXXXDDDDDDDDUUUUBBBBBIIIIIIIILBBBNBNNNNBBBBBBBBBBBBZZZZZZZBBBBBIIIIIIEEEEEEEEEEEIIIIIIIWWWWWWWWWWWZZZZZZDDDD
+BBBBBBEEEYEEEEEELEEENNWWWWXXXXXXXXXXDDDDDDUUUUUUUBBBBIIIIIIIIIBBBBBBBBBBBBBBBBBBBBBBZZZZZZHHHUUUIIIIIENEEEEEEEEEIIIIMMMWWWWWWWWWWWZZZZZZZZDD
+BBBBBBBEEEEEEEEEEEEENWWWWWXXXXXXXXXXDDDDDDDUUUUUUBBBBIIIIIEIIBBBBBBBTTBBBBBBBBBBBBBZZZZZZZHUUUUUUUIIEEEEEEEEEEEEEMMMMMMMWWWWXXXXXWZZIJZZZZDZ
+BBBBBBBBBEEEEEEEEEEEELXXXXXXXXXXXXXXDDDDDDUUUUUUUBTUBIIIIIIIBBBBBBBBTBBBBBBBBBBBBBZZZZZZZZUUUUUUUUIIIELEEEEEEEEEEMMMLWWMWXXXXXXXXXZIIIIIZZDZ
+BBBBBBBBBEEEEEEEEEEEEEXXXXXXXXXXXXXXDRRDZAUUUUUUUUUUUNNNNIMBBBBBBBBBBBBBBBBBBBBOOBZZZZZZZZZUUUUUUUUUEEEEEEEEEEEEEMMMLLWWWXXXXXXXXXZIIPIZZZZZ
+BBBBBBBBBBEEEEEEEEEEEWXXXXXXXXXXXXXXDRRDAAAUUUUUUUUMMMNMNNMBBBBBBBBBBBRNBBBBBVNOZZZZZZZZUUUUUUUUUUUUUEEEEEEEELELLMMLLLWWWXXXXXXXXXZIIIIIIZZZ
+BBBBBBLLLLLLEEEEEEEEEEXXXXXXXXXXXXXXWVVAAARAUUUUUUUMMMMMMMMBBBBBBBBBBBRNNBBNNNNOOZZZNNZUUUUUUUUUUUUUUUUEEEEEELLLLMLLLLWWWXXXXXXXXXZIIIIIIZZZ
+BBBBBBLLLLLLEEEEEEEEEEXXXXXXXXXXXXXXWVVAAAAAAUUUUUUMMMMMMMMBBBBBBBBBBRRNNNNNNNNOONZZNNZUUUUUUUUUUUUUZEEEEEEEELLLLLLLLVWWWXXXXXXXXXIIIIIIIIIZ
+BBBBBBLLLLLLLLXXEEEVEKXXXXXXXXXXXXXXWVVVVVVAAAAUUUUMMMMMMMMBBMBBBBBBBBRNNNNNNNNNNNNNNUUUUUUUUUUUUUUUEEEEEEEEELLLLLLLLLLLWXXXXXXXXXIIIJZZZZZZ
+BBBBBBLLLLLLLGLLEEEEEKXXXXXZZZZZZZWWVVVVVVVVVUUUUUMMMMMMMMMMMMBBBBBBBBNNNNNNNNNNINNNNUUUUUUUUUUUUUUJEEEEEEEELLLLLLLLLLLWWXXXXXXXXXJJJJJJJZZZ
+BBBBBBLLLLLLLLLLLLLLLLXXXXXXXXXXXXXWVVVVVVVVVUUUUUMMMMMMMMMMMMBBBBBBBBBNNNNNNNNNNNNNNUUUUUUUUUUUUVVICCELEEEELLLLLLLLLLDDWXXXXXXXXXWWJJJJZZZZ
+BLLLLLLLOOOLLLLLLLLLLLXXXXXXXXXXXXXWVVVVVVVVVVURRUFRMMMMMMMMMBBBBBBBBNNNNNNVKKNNNNNNNNNNNUUUUIVVVVVICCCEEEEELLLLLLLLLDDDDXXXXXXXXXJJJJJJJZZZ
+BLLLLLLLOOOLLLLLLLLLLLCZZZXXXXXXXXXZVVVVVVVVVVRRRRRRRRMMMMMMMIIIBBBBBBBBVVVVVKYNNNNNNNNNNNUIIIIVVVIIIIEEEEELLLLLLLLLLDDDDDDXXXJJJJJJJJJJJZZZ
+BLLLLLLLOOOLLLLLLLLLLLLLZZXXXXXXXXXZVVVVVVVVVRRRRRRRRRRRTTTIIIIIIIBBBYYVFVVVVVYYNNNNNNNINNNIIIIVVIIIIEEEEEEEELVLLLLGLLDDDDDXXXJJJJJJJJJJJJJZ
+LLLLLLLLOOOLLLLLLLLLLLLNZZXXXXXXXXXZVVVVVVVVRRRRRRRRRRRRRRRNIIIIIBBBBYYVVVVVYYYYYYNNNNNIIIBIIIIVIIIIIBEEEDDKELVVDLLLLDDDDDDDDDJJJJJJJJJJJJJZ
+LLLLLLLLOOOLLLLLLLLLLALNZZXXXXXXXXXZVVVVVVVVKRRRRRRRRRRRRRRRRIIIIBBBBBYYYYVVYYYYYYNNNIIDIIIIIIIIIIIIIIDREDVDEVVVDLLDLDDDDDDDDJJJJJJJJJJJJJJJ
+LLLLLLLLOOOLLLLBBBLLAAZZZZZZZZZZZZZMVVVVVVVRRRRRRRRRRRRRRXRRIIIIIIIIBYYYYYVVYYYYYYNNNIIIIIIIIIIIIIIIIIDDDDDDDVVDDDDDDDDDDDQDDDJJJJJJJJJJTJJC
+LLLLLLLLOOOLLLBBBBLLLAAAAAMZZZZMZZMMMVVVVVVRCCCRRRRRRRRRRRRRIIIIIKKYYYYYYYYYYYYYYYYYNNIIIIIIIIIIIIIIIIDDDDDDDVDDDDDDDDDDDQQDDDJJJJJJJJJTTTJC
+LLLLLLLLOOOLLLLBBBLQLAAAAAMMMZZMZMMMVVVVVVVRCCCCCRRRRRRIIIRRRIIIIKKYYYYYYYYYYYYYYYYYYIIIIIIIIIIIIIIISIDDDDDDDVVDDDDDDDDDQQQDQQGJJJJJJJJGGGCC
+LLLLLLLLOOOLLLBBBBBBAAAAAAMMMMMMMMMMMVVVVVVCCCCCCRRRRRRIIIIIIIIIIIKYYYYYYYYYYYYYYYOOOIIIIIIIIIIIIIIIGIDDDDDDDDDDDDWWQQQQQQQQQQGJTJJWWWWGGGCC
+LLLLLLLLOOOLLLBBBBBBAAAAAAAMMMMMMMMMXXVVVVVCCCCCCCEEERJJJIIIIIIIIKKKKYYYYYYYYYYIIIIIIIIIIIIIIIIIIIIGGGDDDDDDDDDDIWWGQQQQQQQQTTJJTTGGGGWGGGGC
+TLLLLLLLLLLLLLBBBBBBBAAAAAAMMMMMMMMXXXVVXVVCCCCCCCEEEEAAAAAIIIIIIKKKKYYYYYYYYYYIIIIIIIGIIIIIIIIIIFGGGGDDDDDDDSDWWWGGQQQQQQQQTTTTTGGGGGGGGCCC
+TLLLLLLLLLLLLLCBBBBBBBACAAAMMMMMMMMXXXXXXXCCCCCCCCEEECAUUUUUUIIIIKKKYYYYYYYYYIIIIIIIIIGIIIIIIFFFFFGGGGDDDDDDSSSSWWWGGQQQQQQQTTTTGGGGGGGGGCCC
+ZLLLLLLEELLLLLBBBBBBBUCCCMMMMMMMMMMMXXXXXCCCCIIIIIIIIIIUUUUUUHIIKKKKYYYYYYYYYYGXIIIIIIGIIIIIIGGFFFGGGGGDDDDDSSSSSGGGGGQQQQQTTTTGGGGGGGGCCCCC
+ZZLLLZZLLLLLLLBBBSBBBBBCMMMMMMMMMMXXXXXXXXCCCIIIIIIIIIIUUUUUUHIIIIKKJYYYYYYYYGGGIIIIIGGGGIIIQGGFGGGGGGGSSSSSSSSSSSSGGQQQQQTTQTTTTGGGGGGCCCCC
+ZZZEZZZZZLLRLLCCKCBBCCCCMMMMMMMMMMMXXXXXXXCCCIIIIIIIIIIUUUUUUHHHIIKKJYYYGGAGGGGGGFGIWGGGGIIGGGGGSSSSSSSSSSSSSSSSSSGGGQQQQQQQQQTTGGGGGGGCCCCC
+ZZZZZZZZZZLLLLSCCCCCCCCCCMNNMMMMMEEXXXXXXXXCCIIIIIIIIIIUUUUUUHQHHHJJJJJYGGGGGGGGGFGGGGGGGGGGGGGGSSSSSSSSSSSSSSSSSWWWGWQQQQQQQQQTGGGGGGCCCCCC
+ZZZZZZZZSSLLLSSSCCCCCCCCMMNMMMMMMMMXXXXXXCCCTIIIIIIIIIIUUUUUUHQHHJJJJJJGGGGGGGGGGGGGGGGGGGGGGGGGSSSSSSSSSSSSSWWWWWWWWWQWQQQQWQTTGGGGGGGGCCCC
+ZZZZZZZZSSSSSSSSSCCCCCMMMMMMMMMMMMMXXXXXXCXXCIIIIIIIIIIQQQQQQQQQAJJJJJJJJJGGGGGGGGGGGGGGGGGGGGGGGGGGGGGSSSSSSSSWWWWWWWWWWQWWWQQGGGGGGGGGCCCC
+ZZZZZZZSSSSSSSSSSCCCCCMMMMMMMMMMMMMXXXXXXXXXXIIIIIIIIIIIIQQQQQQAAEAJJJJJJJGGGGGGGGGGGGGGGGGGGGGGGGGGDDDSSSSSSSSWWWWWWWWWWWWQQQQQGOGGGGGGCCQC
+ZZZZZZZZSTTTSSSSSCCCCCCCMMMMMMMMMMXXXXXXXXXXXXXWWIIIWAIIIQQAPQQAAAAAJJJJGGGGGGMGGGGGGGGGGGGGGGGGGGGGDDDDSSSSSSSAWHWHWWWWWWWQQQQQGGGQQGGGGCQQ
+ZZZZZZZZZTTTSSSTSSCCHCCMMMMMMEMMMAXXXXXXXXXXXXWWWIIIIIIIIIAAPPPAAAAAJJJMGGGGGGMMMGGGGGGGGGBBGGGEGGGGDDBDSSSSSSSHHHHHWWWWYWWQQQQQQQQQQQQGQQQQ
+ZZZZZZZOZTTTTTTTTSCCHCHMMMEEEEEMAAXXXXXXXXXXXXWIIIIIIIIIIIAUAPAAAAAAJJJMGGGMMGMMMGGGGGGGGGGGGGEEGGGGSSSSSSSSSSSHHHHHWWWYYQQQQQQQQQQQQQQQQQQX
+ZZZZZZZOZZTTTTTTTTTHHHHHMEEEEEEEEAAXXGXJXXXXXXWIIIIIIIIIIIAAAAAAAAAAAMMMMMMMMMMMGGGGGGGGGGGGGWEEEEEESSSSSSSSSSSHHHHHHHWHHHHQQQQQQQQQQQQQQQQQ
+ZZZZZOOOTTTTTTTTTTTTTTEHEEEEEEEEAAXXXXXJXCXXXIIIIIIIIIIIIIAAAAAAAAAAMMMMMMMMMMMMGGGGGGGGGGGGGWEEEEEESSSSSSSSSSSHHHHHHHHHHHHQQQQQQQQQQQQQQQQQ
+ZZZZZOOOTTTTTTTTTTTTTTEEEEEEEEEEEAXXAAAJACCCCIIIIIIIIIIIIIAAAAAAAAAAAAMMMMMMMMMMMMMGGGGGGGGGGEEEEEEESSSSSSSSSSSHHHHHHHHHHHHQKKQQQQQQQQQQQQQQ
+OOOOOOOOOOTTTTTTTTTTTUUESSSSSSSEAAAAAAAAACCCCIIIIIIIIIIIIIFAAAAAAAAAAAMMMMMMMMMMMGGGGGGUGGGEGEEEEEEESSSSSSSSHHHHHHHHHHHHHHHHKKKKQQQQQQQQQQQQ
+OOOOOOOOOOTTTTTTTTTTUUUESSSSSSSEAAAAAAAAACCCCIIIIIIIIIIIIIAAAAAAAAAAAMMMMMMMMMMMMMGGGGGGGEEEEEEEEEEESSSSSSSSXXHHHHHHHHHHHHHHKKKQQQQQQQQHQQQQ
+OOOOOOOOOOOTTTTTTTTTCCCESSSSSSSZEAAAAAAAEEECCSIIIIIIIIIISSAAAAAAAAAAMMMMMMMMMMMMMMGGGGOOEEEEEEEEEEEESSSSSSSSXXXHHHHHHHHHQHHHHKNPPIQQQQQHQHHH
+OOOOOOOOOOTTTTTTTTTTCCCCSSSSSSSEEEAAAACEEEESSSIIIIIIIIIISSAAAMMAAAAAMMMMMMMMMMMMMMXXGGJEEEEEEEEEEEXBSSSSSSSSXXXXHHHHHHHQQHHKKKNNPIIIQIIHHHHH
+OOOYYYYYOOTTTTTTTTTTBCCCSSSSSSSEHHHAAAEEEEESSSIIIIIIIIIITGGAMMMAAAMMMMMMMMMMMMVVVMXXXJJJJEEEEEEEEEXXSSSSSSSSXXXXXHHHHHHHHHKKKKKNNIIIIIIHHHHH
+OOYYYYYYOTTTTTTTTTUTCCCCSSSSSSSEHHHAAAEEEEEESSIIIIIIIIIITGGAMMMAAAAAMDMMMMMMMMVVXXXXXJJJJEEEEERRREXXSSSSSSSSXXXXXHHTHTKKHHKKKKKNNTIIIIIHHHHH
+OOYYYYYYOYTTTTTTTCUCCCCCSSSSSSSYYHIIIIIEEEEESSIIIIIIIIIITTTTMMMMAAADDDDMMMMMMMVVVVXXXJJJJJEEEERRRXXXBBBXXXXXXXXXHHHTTTTKKKKKKKNNNTIIIIIIHHHH
+YYYYYYYYYYTTTTTTTCCCCCCCSSSSSSSYYHIIIIIIEEEEESSSSSSSSSTTTTTJTYYYAADDDDDDVVMVVVVVVVJJJJJJJJEEEEERRXXXBBXXXXXXXXXXGGGTTTTTKKKNNNNNIIIIIIIIIHHH
+YYYYYYYYYYYYTTTYYYCCCCCCSSSSSSSSSPIIIIIEEEEEESSSSSSSTSTTTTTTTTYYYADDDDDDVVVVVVVVVVJJJJJJJJEEEERRRXXXXXXXXXXXVXVVVVGTTTUTKNNNNNNNIIIIIIIIIHHH
+YYYYYYYYIIYYYYYYYCCCCCCCCCSSSSSSSIIIIIIIEEEEEEESSSSSTTTTTTTTTTTYYYDDDDDDVVVVVVVVVVVVVJJJJJEEERRRRRRXXXXXXXXXVVVVVGGTTTTMNNNNNNNNIIIIIIIIIHHH
+YYYYYYYYHHHHHHYYYYCCCCCCCCSSSSSSSIIIIIIEEEEESESSSSSSTJTTTTTTTTYYYYYDDDDDDVVVVVVVVVVJJJJJJJEEERRRRRRRRXXXXXXXVVVVVVVVATTNNNNNNNNNIIIIIIIIHHHH
+YYYYYYYYYHHHHHHYYYCCCCCCCCSSSSSSSIIIIIGEEEEESSSSSSSSSYTTYTYYYYYYYYYDDDDDDDDVVVVVVVVJVVVVJEEERRRRRRRRRXRRXXXXVVVVVVVVAAAANNNNNNNNNIIIIIIIIHHH
+YYYYYYYDYHHHHHYYYYCCCCCCCCSSSSSSSIIIGGGEEEEEESSSSSSSSYYYYYYYYYDDDYYYDDDDSDDDVVVVVVVVVVVVVEEERRRRRRRRRRRRXXXXVVVVVVVVAAAANNNNNNNNNNIIIIUUIIHH
+YYYYYYYYHHHHHYYYYYCCCCCCCCSSSSSSSIIIIIIIPEEEEESSSSSYYYYYYYYYYYDDDDSSDSSSSVVVVVVVVVVVVVVVEEEERRRRRRRRRREEXXXVVNVVVVVVAAAANNNNNNNNNNIIIUUUUUHH
+SYSSSSYYHHHHHHYYYYCCCYCHCCSSSSSSSSSSSIHPPEEEEEEESSSYYYYYYYYDDYDDDDSSSSSSSSSVVVVVVVVVVVMMMMMMKMRRRRRRRRTEXXXXTVVVVVVAAAAAANNNNNNNNNNUIUUUUUUH
+SYSSSSYYHHHHHHYYYYYYCYIHHCSSSSSSSSSSSHHHHEEEEEESSSSAYYYYYYYDDDDDDDFSSSSSSSSSVVVVSVVMMMMMMMMMKMMRRRRRRTTEETTTTTTVVVAAAAAAANNNNNNNNNNUUUUUUUUU
+SSSSSSSSSHHHHHYYYYYYYYYHHHHSSSSSSSSSSHHHHEEEEEEAASSSHYYYYYYDDDDDFFFSSSSSSSSSSVVVSVVMMMMMMMMMMMMRTRRRRTTTTTTTTTTVAAAAAAAAANNNNNNNNNNUUUUUUUMU
+SSSSSSSHHHHHHHHHYYYYYYYYHHHSSSSHHIIIHHHHEEEEEAAAAASHHHHSYYYDDDFFFFSSSSSSSSSSSSSSSVVMMMMMMMMMMMAATRRRTTTTTTTTTTUVAAAAAAAANNNNNNNNNNNUUUUUUUUF
+SSASSSSSSHHHNHHHZZJJYTYHHHHHHHHHHHIIHHHHHHEEEAAAAAAATHXXXYYADDFFFFSSRSSSSSSSSSSSVVVMMMMMMMMMMMAATTTTTTTTTTTTTTTAAAAAAAAAAUNNNNNUNUUUUUUUBBBF
+SSASSSSSSHHHHJHZZJJJYYYHHHHHHHHHHHHHHHHHHHGEEAAAAAAAAXXXXYYAAAAAAAASASSSSSSSSSSSSSVVMMMMMMMMMAATTTTTTTTTTTTTTTAAAAAAAAAAUUNNUNUUUUUUUUUBBBBB
+SAAAASSSSBHHVJHHJJJJYYHHHHHHHYYHHHHHHHHHHHGAAAAAAAAAAXXXXXYYAAAAAAAAAAASSSSSSSSSVVVMMMMMMMMMMAATTTTDTTTTTTTTTTTAAAAAAAAAUUUUUNUUUUUUUUBBBBBB
+SAAAAASBBBBJJJJHJJJJYYHHHHHHYYYYYHHHHHHHHAAAAAAAAAAAAXKXXXIRAAAAAAAAASSSSSGASSSSVVVTMMMMMMMMAAAATTMDTTTTTTTXZTTAAAAAAVAAVVUUUUUXUXUUUUUHHBBH
+AAAAAASSSBJJJJJJJJJHHHHHHHHYYYYYYYYYHHHHHAAAAAAAAAAAAXXXNIIRRAAAAAAAAAAAASSAASSSSVTTMSMMMMMMMAAATTMMMMTTTXTXXTXAAAAAAVVVVEUUUUUXXXUUUUUUHHHH
+AAAAAJRJJJJJJJJJJJJHHHHHHHYYYYYYYYYYHHHHHAAAAAAAAAAAAJIIIIIRAAAAAAAAAAAAAASAAATSRVTTMMMMMMMXXXAAATPMMMKXXXXXXXXXAAAAAVVVVUUUUUXXXXXXXUUUHHHH
+AAAAARRTTJAAJJJJJJJJHHHHHHHYYYYYYYYYHHHAAAAAAAAAAAAAAJIIIIIIIIIAAAAAAAAAAAAAATTTVVTTMMMGMZZXXXXAAMMMMXXXXXXXXXXXAAAVVVVVVUUUUXXXXXXXXXHHHHHH
+AAAAARRRJJAJJJJJJJJJHHHUUUUUYYYYYYYYYYEAAAAAAAAAAAAAAAYYIIIIIIIIAAAAAAAAAAAAAATTTTTTWMMMMZZXXXAAAAMMMXXXXXXXXXXXAAAVVVVVVUVVUXXXXXXXXXXHHHHH
+AAAAAAARJAAJJJJJJJJJMPPUUUUUYYYYYYYYYYAAAAAAAAAAAAAAAAAAIIIIIIIAAAAAAAAAAAAAAATTTTTWWDDDMXXXXXXXAAAXXXXXXXXXXXXXAAVVVVVVVVVVUXXXXXXXXHHHHHHH
+AAAAAARRRAAAJJJJJJJJPPPUUUUUYYYYYYYYYYAANNAAAAAAAAAAAIAIIIIIIIIAAISAIIIAAAATAATWWTWWWWDDXXXXXXXXXXXXXXXXXXXXXKKKAAVVVVVVVVVVUXXXXXXXXHHHHHHH
+AAAAAGGRRAAAAAJJPPPJJPPUUUUUYYYYYYYYYYYOOOOROSSAAAIAAIIIIIIIIFIIAIIIIIIAAOOOAATTWWWWWWWXXXXXXXXXXXXXXXXXXXXXXXKAAKVVVVVVVVVVVTXXXXXIIXXHHHHH
+AAAAAGGGRRRAAAAAAPPPPPPPPPYYYYYYYYYYYYOOOOOOOSSSSAGGGGGIIIIIFFIIIIIIIIAAOOOOOOTTWWWWWWWXXXXXXXXXXXXXXXXXXXXXXXKKKKKKVVVVVVVVVVXXXXXXXEXXHHHH
+AAAAAGGARAAAAAAPPPPPPPPPPPPPYYYYYYOYYYOOOOOOOSSSSGGGGGIIIIIIIFIIIIIIIIAAOOOOOOOOWWWWWWIIXHXXXXXXXXXXXXXXXXXXXXKVVVVVVVVVVVVVVVXXXXXXXEXXHHHH
+AAAAAGGAAAAAAAAPPPPPPPPPPPPPPPYYOOOOOYOOOOOOOOOSSGGGGGGIIIIIIIIIIIIIIIOOOOOOHHHHWWWWWWIIXHXXXXXXXXXLXXXXXXXXXXXZZVVVVVVVVVVVVVVXXXXXXXXXHHHH
+AAAGGGAAAAAAAAPPPPPPNNNPPPPPPPPPPOOOOOOOOOOOOOCGGGGGGGGGIIIIIIIIIIIIIIIQIOOOHHHHHWWWWWWIJHHXXXXXXXXXXXXXXXXXXHXZZVVVVVVVVVVVVVVXXXXXYYXXHHHH
+GAAGGGGAAAAAAAAAPJJNNNNPNPPPPPPPNOOOOOOOOOOOOOCGGGGGGGGGGGIIIIIIIIIIIIIIIOHHHHHHHWIWIIIIJHHXXXXXXXXXXXXXXXZZXXZZZVVVVVVVVVVVVVVYXYYYYYYYEEHH
+GGGGGGGGAAAAAAAAAJJNNNNNNPPPPPPPPOOOOOOOOOOUOOOGGGGGGGGGGINIIIIIIIIIIIIIIIIHHHHHHHIIIIJJJHHXXXXXXJXXXXXXXXXZZZZZVVVVVSSSZVVZVVVYYYYYYEEEEHHH
+GGGGGGGGGAAAAAAAAJJNNNNNNPPPPPPPPPPOOOOOOOOUUUGGGGGGGGGGGIIIIIIIIIIIIIIIIHHHHHHHHIIIIIIJJJHXXXXXXXWXXFXXXXZZZZZZVZZVVVVVZZZZZVYYYYEYYEEAEHHH
+GGGGGGGGAAAAAAAAAAJNNNNNNNPNPPPPXXXOOOOOOOOOUUGGGGGGGGGGGGIIIIIIIIIIIIHHIIHHHHHHHHHIIIIJJJHXXXXXXXWXFFFXXXXZZZZZZZZZZZVZZZZZZZYYYYEEEEEEHHHH
+GGGGGGGGGGGAAAJJJJJNNNNNNNNNPPPXXXXOOXXOOOOOGGGGGGGGGGGGGGGGIIIIIIIIIIIHHHHHHHHHHHHHHHHHHHHHXXXXXXXXXFFFFXXZZZZZZZZZZZZZZZZZZZZZYYEEEEEHHHHH

2024/go/day13/day13.go

@@ -0,0 +1,58 @@
+package day13
+
+import (
+	"adventofcode2024/utils"
+	_ "adventofcode2024/utils/grid2d"
+	_ "adventofcode2024/utils/inputs"
+	"regexp"
+	_ "fmt"
+	"strings"
+)
+
+func Part1(input string) int {
+	val := 0
+	machines := strings.Split(input, "\n\n")
+	pattern := `Button A: X\+(\d+), Y\+(\d+)\sButton B: X\+(\d+), Y\+(\d+)\sPrize: X=(\d+), Y=(\d+)`
+	re := regexp.MustCompile(pattern)
+	for _, machine := range machines {
+		matches := re.FindStringSubmatch(machine)
+		a := utils.MustAtoi(matches[1])
+		b := utils.MustAtoi(matches[2])
+		c := utils.MustAtoi(matches[3])
+		d := utils.MustAtoi(matches[4])
+		X := utils.MustAtoi(matches[5])
+		Y := utils.MustAtoi(matches[6])
+//		fmt.Println(matches)
+		B := (Y*a - X*b)/(a*d - c*b)
+		A := (X - c*B)/a
+//		fmt.Printf("A: %d B: %d\n", A, B)
+		if (A*a + B*c == X && A*b + B*d == Y) {
+			val += A*3 + B
+		}
+	}
+	return val
+}
+
+func Part2(input string) int {
+	val := 0
+	machines := strings.Split(input, "\n\n")
+	pattern := `Button A: X\+(\d+), Y\+(\d+)\sButton B: X\+(\d+), Y\+(\d+)\sPrize: X=(\d+), Y=(\d+)`
+	re := regexp.MustCompile(pattern)
+	for _, machine := range machines {
+		matches := re.FindStringSubmatch(machine)
+		a := utils.MustAtoi(matches[1])
+		b := utils.MustAtoi(matches[2])
+		c := utils.MustAtoi(matches[3])
+		d := utils.MustAtoi(matches[4])
+		X := utils.MustAtoi(matches[5]) + 10000000000000
+		Y := utils.MustAtoi(matches[6]) + 10000000000000
+//		fmt.Println(matches)
+		B := (Y*a - X*b)/(a*d - c*b)
+		A := (X - c*B)/a
+//		fmt.Printf("A: %d B: %d\n", A, B)
+		if (A*a + B*c == X && A*b + B*d == Y) {
+			val += A*3 + B
+		}
+	}
+	return val
+}

2024/go/day13/day13_test.go

@@ -0,0 +1,45 @@
+package day13
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`Button A: X+94, Y+34
+Button B: X+22, Y+67
+Prize: X=8400, Y=5400
+
+Button A: X+26, Y+66
+Button B: X+67, Y+21
+Prize: X=12748, Y=12176
+
+Button A: X+17, Y+86
+Button B: X+84, Y+37
+Prize: X=7870, Y=6450
+
+Button A: X+69, Y+23
+Button B: X+27, Y+71
+Prize: X=18641, Y=10279`)
+	require.Equal(t, 480, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`Button A: X+94, Y+34
+Button B: X+22, Y+67
+Prize: X=8400, Y=5400
+
+Button A: X+26, Y+66
+Button B: X+67, Y+21
+Prize: X=12748, Y=12176
+
+Button A: X+17, Y+86
+Button B: X+84, Y+37
+Prize: X=7870, Y=6450
+
+Button A: X+69, Y+23
+Button B: X+27, Y+71
+Prize: X=18641, Y=10279`)
+	require.Equal(t, 480, r)
+}

2024/go/day14/day14.go

@@ -0,0 +1,149 @@
+package day14
+
+import (
+	"adventofcode2024/utils"
+	grid "adventofcode2024/utils/grid2d"
+	"fmt"
+	"regexp"
+	"strings"
+)
+
+type Robot struct {
+	velocity [2]int
+}
+
+const SIZE_X = 101
+const SIZE_Y = 103
+
+func Part1(input string) int {
+	grid := grid.NewGrid(SIZE_X, SIZE_Y, []Robot{})
+	pattern := `p=(-?\d+),(-?\d+) v=(-?\d+),(-?\d+)`
+	re := regexp.MustCompile(pattern)
+	lines := strings.Split(input, "\n")
+	for _, line := range lines {
+		matches := re.FindStringSubmatch(line)
+		fmt.Println(matches)
+		x := utils.MustAtoi(matches[1])
+		y := utils.MustAtoi(matches[2])
+		x1 := utils.MustAtoi(matches[3])
+		y1 := utils.MustAtoi(matches[4])
+		robots := grid.Get(x, y)
+		grid.Set(x, y, append(robots, Robot{velocity: [2]int{x1, y1}}))
+	}
+	fmt.Println(grid.StringWithFormatter(formatter))
+	ng := ticks(grid, 100)
+	fmt.Println(ng.StringWithFormatter(formatter))
+	
+	return get_saftey(ng)
+}
+
+func Part2(input string) int {
+	min_safe := 240096000
+	min_i := 0
+	max_safe := 0
+	max_i := 0
+	grid := grid.NewGrid(SIZE_X, SIZE_Y, []Robot{})
+	pattern := `p=(-?\d+),(-?\d+) v=(-?\d+),(-?\d+)`
+	re := regexp.MustCompile(pattern)
+	lines := strings.Split(input, "\n")
+	for _, line := range lines {
+		matches := re.FindStringSubmatch(line)
+		fmt.Println(matches)
+		x := utils.MustAtoi(matches[1])
+		y := utils.MustAtoi(matches[2])
+		x1 := utils.MustAtoi(matches[3])
+		y1 := utils.MustAtoi(matches[4])
+		robots := grid.Get(x, y)
+		grid.Set(x, y, append(robots, Robot{velocity: [2]int{x1, y1}}))
+	}
+	fmt.Println(grid.StringWithFormatter(formatter))
+	max_safe = get_saftey(grid)
+	for i:=0;i<7380;i++ {
+		ng := ticks(grid, 1)
+		safe := get_saftey(ng)
+		if safe > max_safe {
+			max_safe = safe
+			max_i = i
+		}
+		if safe < min_safe {
+			min_safe = safe
+			min_i = i
+		}
+		grid = ng
+	}
+	for i:=7380;i<7390;i++{
+		ng := ticks(grid, 1)
+		fmt.Println(ng.StringWithFormatter(formatter))
+		grid = ng
+	}
+	fmt.Println(grid.StringWithFormatter(formatter))
+	fmt.Printf("max_safe: %d max_i: %d min_safe: %d min_i:%d", max_safe, max_i, min_safe, min_i)
+	return get_saftey(grid)
+}
+
+func formatter(robots []Robot, x int, y int) string {
+	if len(robots) == 0 {
+		return " "
+	}
+	return "*"
+}
+
+func ticks(g *grid.Grid[[]Robot], seconds int) *grid.Grid[[]Robot] {
+	ng := grid.NewGrid(SIZE_X, SIZE_Y, []Robot{})
+	for y := 0; y < g.SizeY(); y++ {
+		for x := 0; x < g.SizeX(); x++ {
+			for _, robot := range g.Get(x, y) {
+				nx := x + ((robot.velocity[0] * seconds) % SIZE_X)
+				if nx < 0 {
+					nx = g.SizeX() + nx
+				}
+				if nx >= g.SizeX() {
+					nx = nx - g.SizeX()
+				}
+				ny := y + ((robot.velocity[1] * seconds) % SIZE_Y)
+				if ny < 0 {
+					ny = g.SizeY() + ny
+				}
+				if ny >= g.SizeY() {
+					ny = ny - g.SizeY()
+				}
+				robots := ng.Get(nx, ny)
+				ng.Set(nx, ny, append(robots, robot))
+			}
+		}
+	}
+	return ng
+}
+
+func get_saftey(grid *grid.Grid[[]Robot]) int {
+	robots := 0
+	val := 1
+	for y := 0; y < grid.SizeY()/2; y++ {
+		for x := 0; x < grid.SizeX()/2; x++ {
+			robots += len(grid.Get(x, y))
+		}
+	}
+	val *= robots
+	robots = 0
+	for y := 0; y < grid.SizeY()/2; y++ {
+		for x := grid.SizeX()/2 + 1; x < grid.SizeX(); x++ {
+			robots += len(grid.Get(x, y))
+		}
+	}
+	val *= robots
+	robots = 0
+	for y := grid.SizeY()/2 + 1; y < grid.SizeY(); y++ {
+		for x := grid.SizeX()/2 + 1; x < grid.SizeX(); x++ {
+			robots += len(grid.Get(x, y))
+		}
+	}
+	val *= robots
+	robots = 0
+	for y := grid.SizeY()/2 + 1; y < grid.SizeY(); y++ {
+		for x := 0; x < grid.SizeX()/2; x++ {
+			robots += len(grid.Get(x, y))
+		}
+	}
+	val *= robots
+	return val
+}

2024/go/day14/day14_test.go

@@ -0,0 +1,527 @@
+package day14
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`p=0,4 v=3,-3
+p=6,3 v=-1,-3
+p=10,3 v=-1,2
+p=2,0 v=2,-1
+p=0,0 v=1,3
+p=3,0 v=-2,-2
+p=7,6 v=-1,-3
+p=3,0 v=-1,-2
+p=9,3 v=2,3
+p=7,3 v=-1,2
+p=2,4 v=2,-3
+p=9,5 v=-3,-3`)
+	require.Equal(t, 12, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`p=80,75 v=69,72
+p=88,10 v=-28,-23
+p=79,61 v=79,59
+p=37,102 v=92,-43
+p=12,22 v=-5,-95
+p=60,13 v=-30,-42
+p=3,59 v=-96,-88
+p=85,33 v=-43,-41
+p=44,14 v=63,45
+p=6,6 v=-34,-86
+p=47,102 v=12,42
+p=36,88 v=-88,-93
+p=78,27 v=-18,52
+p=96,64 v=-62,-34
+p=49,99 v=-78,-15
+p=57,31 v=-80,21
+p=25,57 v=8,-84
+p=69,20 v=81,61
+p=80,5 v=-11,-30
+p=2,35 v=-85,77
+p=9,12 v=-4,36
+p=37,68 v=12,-69
+p=47,88 v=-8,-90
+p=72,68 v=59,-86
+p=55,38 v=-68,-94
+p=60,58 v=41,37
+p=76,87 v=-1,-18
+p=89,9 v=38,92
+p=100,67 v=17,-53
+p=83,73 v=80,32
+p=77,19 v=-54,-20
+p=10,86 v=-65,36
+p=13,88 v=-64,-84
+p=50,29 v=-17,-29
+p=79,38 v=89,-57
+p=55,57 v=-68,22
+p=71,82 v=-80,52
+p=37,83 v=-68,-43
+p=25,5 v=81,-22
+p=83,54 v=-32,-75
+p=27,95 v=-77,-55
+p=70,97 v=-72,-4
+p=3,84 v=-60,-60
+p=16,29 v=-35,99
+p=39,39 v=37,-38
+p=76,94 v=90,60
+p=18,21 v=-86,-26
+p=22,84 v=-16,66
+p=45,83 v=-40,-43
+p=35,52 v=54,3
+p=30,21 v=14,36
+p=69,61 v=69,-66
+p=52,22 v=-28,33
+p=9,21 v=-85,-73
+p=87,32 v=79,52
+p=28,85 v=-35,85
+p=32,58 v=-49,89
+p=22,75 v=85,44
+p=45,19 v=-88,61
+p=97,59 v=98,-75
+p=70,81 v=82,7
+p=97,102 v=-23,-8
+p=92,68 v=89,72
+p=24,42 v=-63,-97
+p=21,64 v=-45,-47
+p=58,3 v=-69,51
+p=33,68 v=19,-20
+p=27,6 v=-89,-21
+p=28,81 v=-67,-8
+p=59,83 v=-66,-82
+p=3,14 v=-3,-1
+p=19,65 v=15,-25
+p=57,37 v=53,-29
+p=36,84 v=-4,-84
+p=55,96 v=82,-21
+p=68,101 v=51,51
+p=68,8 v=-90,-30
+p=78,51 v=-51,-63
+p=4,55 v=-63,97
+p=100,60 v=76,-13
+p=7,91 v=-96,-73
+p=97,17 v=-54,33
+p=85,60 v=69,-3
+p=20,39 v=96,-85
+p=24,12 v=86,-84
+p=34,7 v=-7,-36
+p=30,69 v=-67,97
+p=65,17 v=20,33
+p=39,101 v=-7,-83
+p=38,51 v=-90,-4
+p=99,61 v=-13,59
+p=30,1 v=-67,-96
+p=1,89 v=-85,-83
+p=8,1 v=68,4
+p=89,89 v=-52,85
+p=81,5 v=-55,71
+p=99,60 v=-94,-72
+p=68,70 v=-10,78
+p=81,18 v=89,-95
+p=47,61 v=-39,56
+p=91,71 v=85,59
+p=28,66 v=44,-28
+p=10,64 v=-59,-4
+p=84,10 v=-32,-11
+p=29,52 v=-37,34
+p=78,43 v=-92,12
+p=85,3 v=-71,4
+p=37,85 v=-46,-84
+p=56,21 v=21,-32
+p=17,17 v=15,17
+p=26,87 v=45,-93
+p=57,21 v=-6,40
+p=95,48 v=-33,59
+p=38,59 v=65,-72
+p=59,85 v=-50,-99
+p=17,21 v=86,-45
+p=53,3 v=-28,-46
+p=1,40 v=-54,-91
+p=61,13 v=-40,83
+p=33,35 v=-72,-96
+p=40,14 v=33,-8
+p=29,89 v=53,-59
+p=74,0 v=-22,-42
+p=12,32 v=-65,-4
+p=82,89 v=-12,20
+p=35,71 v=-40,20
+p=14,5 v=95,83
+p=46,44 v=39,92
+p=25,54 v=-66,-47
+p=91,78 v=64,53
+p=14,9 v=25,67
+p=39,29 v=-29,8
+p=20,100 v=95,51
+p=59,41 v=92,-82
+p=15,92 v=93,-73
+p=42,93 v=3,-86
+p=82,93 v=-21,-96
+p=50,9 v=12,-39
+p=81,22 v=-13,99
+p=72,81 v=-51,-93
+p=88,19 v=-72,-14
+p=8,93 v=-85,-15
+p=54,2 v=61,8
+p=44,81 v=66,41
+p=78,10 v=90,8
+p=19,53 v=68,4
+p=80,43 v=9,46
+p=11,38 v=-66,88
+p=31,3 v=4,-2
+p=49,28 v=-74,21
+p=27,15 v=54,-88
+p=96,87 v=-50,-67
+p=94,94 v=-5,-97
+p=16,89 v=73,23
+p=93,32 v=-53,93
+p=47,17 v=-29,92
+p=10,78 v=16,35
+p=55,33 v=-60,-17
+p=55,73 v=-68,-22
+p=100,62 v=17,-69
+p=67,91 v=-49,45
+p=68,53 v=-42,-41
+p=35,73 v=54,47
+p=20,63 v=-85,-12
+p=23,16 v=-87,33
+p=70,55 v=50,-16
+p=92,6 v=41,-59
+p=9,97 v=-37,47
+p=48,48 v=42,40
+p=96,37 v=-90,32
+p=66,13 v=-60,91
+p=62,46 v=-50,18
+p=11,15 v=98,77
+p=42,78 v=1,47
+p=10,40 v=15,-48
+p=88,44 v=7,-75
+p=27,53 v=-70,-9
+p=21,7 v=-56,96
+p=92,81 v=-22,69
+p=57,65 v=92,-34
+p=85,63 v=77,11
+p=92,2 v=-30,21
+p=59,16 v=73,-70
+p=16,11 v=86,-89
+p=82,16 v=80,-36
+p=41,30 v=-49,19
+p=13,6 v=14,73
+p=67,99 v=-91,51
+p=37,20 v=-65,-37
+p=85,16 v=99,-14
+p=1,39 v=-44,56
+p=37,29 v=74,5
+p=44,51 v=-18,93
+p=43,9 v=-55,-84
+p=5,10 v=-65,26
+p=51,90 v=-59,-96
+p=55,98 v=-9,23
+p=0,94 v=88,-49
+p=91,43 v=-14,-72
+p=93,43 v=-69,-94
+p=84,100 v=-12,54
+p=23,46 v=85,78
+p=79,37 v=39,-10
+p=1,23 v=99,-79
+p=73,50 v=-51,84
+p=78,58 v=-31,-16
+p=75,44 v=69,71
+p=27,5 v=-87,14
+p=95,91 v=-33,63
+p=22,94 v=-5,-37
+p=36,11 v=-5,-60
+p=18,3 v=-64,-27
+p=44,14 v=24,-92
+p=96,40 v=65,-92
+p=47,1 v=84,25
+p=93,22 v=68,-48
+p=14,32 v=-24,37
+p=99,17 v=78,-89
+p=53,36 v=10,58
+p=44,44 v=-78,-60
+p=15,28 v=-96,-20
+p=96,61 v=-81,-45
+p=58,87 v=-9,7
+p=20,43 v=84,-22
+p=50,42 v=-18,68
+p=74,23 v=-12,42
+p=12,57 v=-94,-94
+p=49,49 v=-89,40
+p=47,98 v=-67,-8
+p=84,17 v=-62,11
+p=31,6 v=-57,-42
+p=28,67 v=66,-81
+p=0,3 v=-88,-13
+p=51,76 v=82,76
+p=67,81 v=87,-14
+p=84,78 v=39,41
+p=39,74 v=72,35
+p=30,10 v=64,-77
+p=10,31 v=11,-4
+p=6,90 v=-4,76
+p=90,24 v=-2,-23
+p=8,39 v=-57,-27
+p=31,69 v=93,-25
+p=79,38 v=39,-35
+p=69,31 v=70,30
+p=1,16 v=7,73
+p=46,9 v=-99,-70
+p=53,16 v=-94,-84
+p=32,60 v=33,-69
+p=62,22 v=-99,-4
+p=66,3 v=98,20
+p=4,76 v=46,-75
+p=50,71 v=-90,22
+p=57,12 v=31,-15
+p=59,84 v=-50,-65
+p=33,0 v=76,-48
+p=58,76 v=-30,44
+p=6,69 v=6,35
+p=74,91 v=-61,-43
+p=36,92 v=-58,60
+p=2,78 v=-48,-98
+p=43,91 v=53,76
+p=34,101 v=-77,79
+p=40,44 v=-68,28
+p=71,64 v=47,-48
+p=54,7 v=84,15
+p=54,75 v=-60,-31
+p=14,40 v=86,12
+p=80,29 v=-92,-26
+p=8,47 v=-33,-69
+p=2,41 v=12,-9
+p=39,60 v=-38,59
+p=13,22 v=86,-20
+p=25,12 v=-57,11
+p=60,47 v=96,96
+p=50,51 v=-48,-82
+p=85,40 v=89,74
+p=99,4 v=-94,-21
+p=75,7 v=29,-73
+p=28,58 v=-80,24
+p=46,94 v=-9,56
+p=24,65 v=-76,62
+p=50,2 v=-20,70
+p=85,55 v=-5,66
+p=38,11 v=43,36
+p=53,54 v=53,24
+p=18,45 v=65,96
+p=94,22 v=16,80
+p=79,28 v=75,-69
+p=30,38 v=-15,-29
+p=5,23 v=-4,49
+p=8,98 v=96,-99
+p=7,60 v=-14,47
+p=96,17 v=88,-73
+p=48,23 v=-41,35
+p=17,31 v=-26,-23
+p=13,52 v=66,37
+p=58,19 v=41,55
+p=25,9 v=-77,-89
+p=3,92 v=55,-80
+p=74,95 v=20,-77
+p=26,70 v=43,72
+p=54,4 v=96,-18
+p=63,8 v=-97,49
+p=23,51 v=87,-75
+p=24,18 v=85,36
+p=8,52 v=6,-13
+p=97,50 v=17,-72
+p=47,66 v=-25,6
+p=38,78 v=3,-93
+p=62,6 v=5,77
+p=56,74 v=-70,-6
+p=94,99 v=9,34
+p=19,92 v=-18,26
+p=35,54 v=-47,-69
+p=92,8 v=-13,42
+p=47,86 v=12,-90
+p=12,83 v=-68,2
+p=0,18 v=-75,-89
+p=11,99 v=-99,14
+p=88,20 v=62,21
+p=27,53 v=53,-47
+p=17,44 v=-5,-91
+p=57,10 v=66,-65
+p=66,95 v=-71,-12
+p=38,21 v=23,95
+p=68,69 v=-31,35
+p=87,71 v=50,72
+p=98,12 v=47,33
+p=94,21 v=66,51
+p=53,97 v=-16,-93
+p=59,35 v=6,39
+p=12,88 v=-86,88
+p=85,16 v=39,8
+p=38,85 v=35,80
+p=44,9 v=-48,11
+p=71,18 v=-82,39
+p=85,14 v=-74,-73
+p=88,22 v=-42,36
+p=8,6 v=-58,38
+p=21,58 v=-66,9
+p=25,17 v=-68,95
+p=89,16 v=-34,-86
+p=33,54 v=64,-88
+p=57,8 v=54,51
+p=40,18 v=-98,58
+p=91,22 v=-34,-53
+p=75,81 v=-70,26
+p=89,70 v=-2,69
+p=62,6 v=-1,-92
+p=78,24 v=-82,-42
+p=47,7 v=-75,83
+p=86,8 v=-63,95
+p=80,64 v=-36,-79
+p=69,95 v=-30,29
+p=46,86 v=85,20
+p=76,35 v=-82,-51
+p=33,15 v=-17,55
+p=40,58 v=-2,-11
+p=76,31 v=39,2
+p=46,82 v=-15,-45
+p=14,53 v=36,-16
+p=98,66 v=68,-3
+p=83,38 v=35,-87
+p=41,9 v=53,70
+p=35,33 v=-68,-68
+p=53,66 v=62,97
+p=75,80 v=49,-62
+p=66,70 v=-50,47
+p=78,80 v=7,64
+p=82,16 v=85,-81
+p=58,25 v=11,-70
+p=36,72 v=33,72
+p=66,92 v=-91,10
+p=24,52 v=-98,22
+p=74,7 v=-36,-79
+p=46,26 v=-61,-90
+p=52,24 v=53,-88
+p=92,26 v=31,78
+p=60,52 v=80,-81
+p=82,78 v=-81,-49
+p=10,3 v=-15,-55
+p=91,31 v=99,77
+p=75,50 v=-91,40
+p=49,71 v=93,91
+p=1,94 v=-54,54
+p=96,50 v=39,18
+p=0,3 v=-53,33
+p=34,9 v=-17,-8
+p=96,28 v=68,-63
+p=25,4 v=66,21
+p=94,74 v=82,-89
+p=47,66 v=-17,87
+p=58,23 v=63,83
+p=13,82 v=-74,75
+p=29,85 v=40,79
+p=57,7 v=50,83
+p=7,88 v=-37,-16
+p=81,61 v=-10,34
+p=6,32 v=33,-60
+p=63,7 v=1,98
+p=59,29 v=-31,-85
+p=85,91 v=19,-18
+p=22,39 v=21,90
+p=25,13 v=75,89
+p=14,100 v=-27,30
+p=33,6 v=97,-53
+p=84,83 v=-22,38
+p=100,69 v=77,-38
+p=2,67 v=-14,-25
+p=71,71 v=-53,73
+p=9,43 v=-52,98
+p=55,76 v=-60,94
+p=49,91 v=-35,-95
+p=77,68 v=26,12
+p=41,91 v=-17,-15
+p=1,69 v=-44,72
+p=32,61 v=4,59
+p=94,12 v=-33,30
+p=1,35 v=96,49
+p=72,64 v=-61,-53
+p=76,93 v=38,-37
+p=97,9 v=33,61
+p=60,32 v=80,18
+p=16,68 v=15,-29
+p=99,72 v=66,44
+p=99,18 v=56,99
+p=42,11 v=-88,11
+p=57,69 v=-2,-2
+p=39,57 v=26,-51
+p=34,15 v=73,42
+p=56,55 v=-61,-75
+p=89,1 v=67,-27
+p=21,100 v=5,70
+p=85,11 v=-35,63
+p=16,35 v=47,-63
+p=98,0 v=93,-2
+p=51,89 v=-9,85
+p=50,32 v=84,-42
+p=29,63 v=78,-76
+p=92,86 v=89,10
+p=27,11 v=-77,51
+p=65,21 v=-59,68
+p=84,68 v=20,-50
+p=19,2 v=-24,-36
+p=25,78 v=25,-85
+p=90,92 v=59,-87
+p=70,100 v=10,-52
+p=48,78 v=3,54
+p=85,81 v=30,44
+p=53,65 v=41,-67
+p=13,95 v=82,-29
+p=5,19 v=95,75
+p=37,96 v=-68,26
+p=83,16 v=-5,-9
+p=31,17 v=4,-20
+p=83,34 v=-83,-76
+p=50,88 v=93,-5
+p=66,36 v=-30,58
+p=11,29 v=-44,83
+p=31,31 v=-77,-51
+p=26,85 v=14,-18
+p=8,76 v=65,69
+p=60,70 v=-40,47
+p=69,70 v=22,64
+p=85,53 v=18,12
+p=97,93 v=-58,-57
+p=52,83 v=92,-9
+p=20,92 v=30,50
+p=88,73 v=32,3
+p=83,16 v=-42,-14
+p=57,89 v=-29,20
+p=50,19 v=73,8
+p=8,101 v=-94,-68
+p=12,77 v=-4,-84
+p=63,28 v=-84,91
+p=46,25 v=13,-95
+p=93,21 v=88,-26
+p=10,54 v=-24,72
+p=69,16 v=-92,-30
+p=26,68 v=21,97
+p=56,30 v=-90,-51
+p=62,69 v=-1,-50
+p=7,6 v=55,-39
+p=63,78 v=76,92
+p=57,55 v=-51,-19
+p=70,62 v=18,37
+p=88,26 v=-61,82
+p=80,50 v=-73,99
+p=40,1 v=-78,86
+p=35,85 v=81,-12
+p=17,74 v=56,47
+p=36,99 v=64,-15
+p=56,18 v=-29,-14
+p=42,44 v=-18,46
+p=84,4 v=-63,-2
+p=97,75 v=27,-62
+p=47,71 v=54,-50
+p=26,101 v=-67,-83
+p=30,74 v=-57,66`)
+	require.Equal(t, 0, r)
+}

2024/go/day14/input.txt

@@ -0,0 +1,500 @@
+p=80,75 v=69,72
+p=88,10 v=-28,-23
+p=79,61 v=79,59
+p=37,102 v=92,-43
+p=12,22 v=-5,-95
+p=60,13 v=-30,-42
+p=3,59 v=-96,-88
+p=85,33 v=-43,-41
+p=44,14 v=63,45
+p=6,6 v=-34,-86
+p=47,102 v=12,42
+p=36,88 v=-88,-93
+p=78,27 v=-18,52
+p=96,64 v=-62,-34
+p=49,99 v=-78,-15
+p=57,31 v=-80,21
+p=25,57 v=8,-84
+p=69,20 v=81,61
+p=80,5 v=-11,-30
+p=2,35 v=-85,77
+p=9,12 v=-4,36
+p=37,68 v=12,-69
+p=47,88 v=-8,-90
+p=72,68 v=59,-86
+p=55,38 v=-68,-94
+p=60,58 v=41,37
+p=76,87 v=-1,-18
+p=89,9 v=38,92
+p=100,67 v=17,-53
+p=83,73 v=80,32
+p=77,19 v=-54,-20
+p=10,86 v=-65,36
+p=13,88 v=-64,-84
+p=50,29 v=-17,-29
+p=79,38 v=89,-57
+p=55,57 v=-68,22
+p=71,82 v=-80,52
+p=37,83 v=-68,-43
+p=25,5 v=81,-22
+p=83,54 v=-32,-75
+p=27,95 v=-77,-55
+p=70,97 v=-72,-4
+p=3,84 v=-60,-60
+p=16,29 v=-35,99
+p=39,39 v=37,-38
+p=76,94 v=90,60
+p=18,21 v=-86,-26
+p=22,84 v=-16,66
+p=45,83 v=-40,-43
+p=35,52 v=54,3
+p=30,21 v=14,36
+p=69,61 v=69,-66
+p=52,22 v=-28,33
+p=9,21 v=-85,-73
+p=87,32 v=79,52
+p=28,85 v=-35,85
+p=32,58 v=-49,89
+p=22,75 v=85,44
+p=45,19 v=-88,61
+p=97,59 v=98,-75
+p=70,81 v=82,7
+p=97,102 v=-23,-8
+p=92,68 v=89,72
+p=24,42 v=-63,-97
+p=21,64 v=-45,-47
+p=58,3 v=-69,51
+p=33,68 v=19,-20
+p=27,6 v=-89,-21
+p=28,81 v=-67,-8
+p=59,83 v=-66,-82
+p=3,14 v=-3,-1
+p=19,65 v=15,-25
+p=57,37 v=53,-29
+p=36,84 v=-4,-84
+p=55,96 v=82,-21
+p=68,101 v=51,51
+p=68,8 v=-90,-30
+p=78,51 v=-51,-63
+p=4,55 v=-63,97
+p=100,60 v=76,-13
+p=7,91 v=-96,-73
+p=97,17 v=-54,33
+p=85,60 v=69,-3
+p=20,39 v=96,-85
+p=24,12 v=86,-84
+p=34,7 v=-7,-36
+p=30,69 v=-67,97
+p=65,17 v=20,33
+p=39,101 v=-7,-83
+p=38,51 v=-90,-4
+p=99,61 v=-13,59
+p=30,1 v=-67,-96
+p=1,89 v=-85,-83
+p=8,1 v=68,4
+p=89,89 v=-52,85
+p=81,5 v=-55,71
+p=99,60 v=-94,-72
+p=68,70 v=-10,78
+p=81,18 v=89,-95
+p=47,61 v=-39,56
+p=91,71 v=85,59
+p=28,66 v=44,-28
+p=10,64 v=-59,-4
+p=84,10 v=-32,-11
+p=29,52 v=-37,34
+p=78,43 v=-92,12
+p=85,3 v=-71,4
+p=37,85 v=-46,-84
+p=56,21 v=21,-32
+p=17,17 v=15,17
+p=26,87 v=45,-93
+p=57,21 v=-6,40
+p=95,48 v=-33,59
+p=38,59 v=65,-72
+p=59,85 v=-50,-99
+p=17,21 v=86,-45
+p=53,3 v=-28,-46
+p=1,40 v=-54,-91
+p=61,13 v=-40,83
+p=33,35 v=-72,-96
+p=40,14 v=33,-8
+p=29,89 v=53,-59
+p=74,0 v=-22,-42
+p=12,32 v=-65,-4
+p=82,89 v=-12,20
+p=35,71 v=-40,20
+p=14,5 v=95,83
+p=46,44 v=39,92
+p=25,54 v=-66,-47
+p=91,78 v=64,53
+p=14,9 v=25,67
+p=39,29 v=-29,8
+p=20,100 v=95,51
+p=59,41 v=92,-82
+p=15,92 v=93,-73
+p=42,93 v=3,-86
+p=82,93 v=-21,-96
+p=50,9 v=12,-39
+p=81,22 v=-13,99
+p=72,81 v=-51,-93
+p=88,19 v=-72,-14
+p=8,93 v=-85,-15
+p=54,2 v=61,8
+p=44,81 v=66,41
+p=78,10 v=90,8
+p=19,53 v=68,4
+p=80,43 v=9,46
+p=11,38 v=-66,88
+p=31,3 v=4,-2
+p=49,28 v=-74,21
+p=27,15 v=54,-88
+p=96,87 v=-50,-67
+p=94,94 v=-5,-97
+p=16,89 v=73,23
+p=93,32 v=-53,93
+p=47,17 v=-29,92
+p=10,78 v=16,35
+p=55,33 v=-60,-17
+p=55,73 v=-68,-22
+p=100,62 v=17,-69
+p=67,91 v=-49,45
+p=68,53 v=-42,-41
+p=35,73 v=54,47
+p=20,63 v=-85,-12
+p=23,16 v=-87,33
+p=70,55 v=50,-16
+p=92,6 v=41,-59
+p=9,97 v=-37,47
+p=48,48 v=42,40
+p=96,37 v=-90,32
+p=66,13 v=-60,91
+p=62,46 v=-50,18
+p=11,15 v=98,77
+p=42,78 v=1,47
+p=10,40 v=15,-48
+p=88,44 v=7,-75
+p=27,53 v=-70,-9
+p=21,7 v=-56,96
+p=92,81 v=-22,69
+p=57,65 v=92,-34
+p=85,63 v=77,11
+p=92,2 v=-30,21
+p=59,16 v=73,-70
+p=16,11 v=86,-89
+p=82,16 v=80,-36
+p=41,30 v=-49,19
+p=13,6 v=14,73
+p=67,99 v=-91,51
+p=37,20 v=-65,-37
+p=85,16 v=99,-14
+p=1,39 v=-44,56
+p=37,29 v=74,5
+p=44,51 v=-18,93
+p=43,9 v=-55,-84
+p=5,10 v=-65,26
+p=51,90 v=-59,-96
+p=55,98 v=-9,23
+p=0,94 v=88,-49
+p=91,43 v=-14,-72
+p=93,43 v=-69,-94
+p=84,100 v=-12,54
+p=23,46 v=85,78
+p=79,37 v=39,-10
+p=1,23 v=99,-79
+p=73,50 v=-51,84
+p=78,58 v=-31,-16
+p=75,44 v=69,71
+p=27,5 v=-87,14
+p=95,91 v=-33,63
+p=22,94 v=-5,-37
+p=36,11 v=-5,-60
+p=18,3 v=-64,-27
+p=44,14 v=24,-92
+p=96,40 v=65,-92
+p=47,1 v=84,25
+p=93,22 v=68,-48
+p=14,32 v=-24,37
+p=99,17 v=78,-89
+p=53,36 v=10,58
+p=44,44 v=-78,-60
+p=15,28 v=-96,-20
+p=96,61 v=-81,-45
+p=58,87 v=-9,7
+p=20,43 v=84,-22
+p=50,42 v=-18,68
+p=74,23 v=-12,42
+p=12,57 v=-94,-94
+p=49,49 v=-89,40
+p=47,98 v=-67,-8
+p=84,17 v=-62,11
+p=31,6 v=-57,-42
+p=28,67 v=66,-81
+p=0,3 v=-88,-13
+p=51,76 v=82,76
+p=67,81 v=87,-14
+p=84,78 v=39,41
+p=39,74 v=72,35
+p=30,10 v=64,-77
+p=10,31 v=11,-4
+p=6,90 v=-4,76
+p=90,24 v=-2,-23
+p=8,39 v=-57,-27
+p=31,69 v=93,-25
+p=79,38 v=39,-35
+p=69,31 v=70,30
+p=1,16 v=7,73
+p=46,9 v=-99,-70
+p=53,16 v=-94,-84
+p=32,60 v=33,-69
+p=62,22 v=-99,-4
+p=66,3 v=98,20
+p=4,76 v=46,-75
+p=50,71 v=-90,22
+p=57,12 v=31,-15
+p=59,84 v=-50,-65
+p=33,0 v=76,-48
+p=58,76 v=-30,44
+p=6,69 v=6,35
+p=74,91 v=-61,-43
+p=36,92 v=-58,60
+p=2,78 v=-48,-98
+p=43,91 v=53,76
+p=34,101 v=-77,79
+p=40,44 v=-68,28
+p=71,64 v=47,-48
+p=54,7 v=84,15
+p=54,75 v=-60,-31
+p=14,40 v=86,12
+p=80,29 v=-92,-26
+p=8,47 v=-33,-69
+p=2,41 v=12,-9
+p=39,60 v=-38,59
+p=13,22 v=86,-20
+p=25,12 v=-57,11
+p=60,47 v=96,96
+p=50,51 v=-48,-82
+p=85,40 v=89,74
+p=99,4 v=-94,-21
+p=75,7 v=29,-73
+p=28,58 v=-80,24
+p=46,94 v=-9,56
+p=24,65 v=-76,62
+p=50,2 v=-20,70
+p=85,55 v=-5,66
+p=38,11 v=43,36
+p=53,54 v=53,24
+p=18,45 v=65,96
+p=94,22 v=16,80
+p=79,28 v=75,-69
+p=30,38 v=-15,-29
+p=5,23 v=-4,49
+p=8,98 v=96,-99
+p=7,60 v=-14,47
+p=96,17 v=88,-73
+p=48,23 v=-41,35
+p=17,31 v=-26,-23
+p=13,52 v=66,37
+p=58,19 v=41,55
+p=25,9 v=-77,-89
+p=3,92 v=55,-80
+p=74,95 v=20,-77
+p=26,70 v=43,72
+p=54,4 v=96,-18
+p=63,8 v=-97,49
+p=23,51 v=87,-75
+p=24,18 v=85,36
+p=8,52 v=6,-13
+p=97,50 v=17,-72
+p=47,66 v=-25,6
+p=38,78 v=3,-93
+p=62,6 v=5,77
+p=56,74 v=-70,-6
+p=94,99 v=9,34
+p=19,92 v=-18,26
+p=35,54 v=-47,-69
+p=92,8 v=-13,42
+p=47,86 v=12,-90
+p=12,83 v=-68,2
+p=0,18 v=-75,-89
+p=11,99 v=-99,14
+p=88,20 v=62,21
+p=27,53 v=53,-47
+p=17,44 v=-5,-91
+p=57,10 v=66,-65
+p=66,95 v=-71,-12
+p=38,21 v=23,95
+p=68,69 v=-31,35
+p=87,71 v=50,72
+p=98,12 v=47,33
+p=94,21 v=66,51
+p=53,97 v=-16,-93
+p=59,35 v=6,39
+p=12,88 v=-86,88
+p=85,16 v=39,8
+p=38,85 v=35,80
+p=44,9 v=-48,11
+p=71,18 v=-82,39
+p=85,14 v=-74,-73
+p=88,22 v=-42,36
+p=8,6 v=-58,38
+p=21,58 v=-66,9
+p=25,17 v=-68,95
+p=89,16 v=-34,-86
+p=33,54 v=64,-88
+p=57,8 v=54,51
+p=40,18 v=-98,58
+p=91,22 v=-34,-53
+p=75,81 v=-70,26
+p=89,70 v=-2,69
+p=62,6 v=-1,-92
+p=78,24 v=-82,-42
+p=47,7 v=-75,83
+p=86,8 v=-63,95
+p=80,64 v=-36,-79
+p=69,95 v=-30,29
+p=46,86 v=85,20
+p=76,35 v=-82,-51
+p=33,15 v=-17,55
+p=40,58 v=-2,-11
+p=76,31 v=39,2
+p=46,82 v=-15,-45
+p=14,53 v=36,-16
+p=98,66 v=68,-3
+p=83,38 v=35,-87
+p=41,9 v=53,70
+p=35,33 v=-68,-68
+p=53,66 v=62,97
+p=75,80 v=49,-62
+p=66,70 v=-50,47
+p=78,80 v=7,64
+p=82,16 v=85,-81
+p=58,25 v=11,-70
+p=36,72 v=33,72
+p=66,92 v=-91,10
+p=24,52 v=-98,22
+p=74,7 v=-36,-79
+p=46,26 v=-61,-90
+p=52,24 v=53,-88
+p=92,26 v=31,78
+p=60,52 v=80,-81
+p=82,78 v=-81,-49
+p=10,3 v=-15,-55
+p=91,31 v=99,77
+p=75,50 v=-91,40
+p=49,71 v=93,91
+p=1,94 v=-54,54
+p=96,50 v=39,18
+p=0,3 v=-53,33
+p=34,9 v=-17,-8
+p=96,28 v=68,-63
+p=25,4 v=66,21
+p=94,74 v=82,-89
+p=47,66 v=-17,87
+p=58,23 v=63,83
+p=13,82 v=-74,75
+p=29,85 v=40,79
+p=57,7 v=50,83
+p=7,88 v=-37,-16
+p=81,61 v=-10,34
+p=6,32 v=33,-60
+p=63,7 v=1,98
+p=59,29 v=-31,-85
+p=85,91 v=19,-18
+p=22,39 v=21,90
+p=25,13 v=75,89
+p=14,100 v=-27,30
+p=33,6 v=97,-53
+p=84,83 v=-22,38
+p=100,69 v=77,-38
+p=2,67 v=-14,-25
+p=71,71 v=-53,73
+p=9,43 v=-52,98
+p=55,76 v=-60,94
+p=49,91 v=-35,-95
+p=77,68 v=26,12
+p=41,91 v=-17,-15
+p=1,69 v=-44,72
+p=32,61 v=4,59
+p=94,12 v=-33,30
+p=1,35 v=96,49
+p=72,64 v=-61,-53
+p=76,93 v=38,-37
+p=97,9 v=33,61
+p=60,32 v=80,18
+p=16,68 v=15,-29
+p=99,72 v=66,44
+p=99,18 v=56,99
+p=42,11 v=-88,11
+p=57,69 v=-2,-2
+p=39,57 v=26,-51
+p=34,15 v=73,42
+p=56,55 v=-61,-75
+p=89,1 v=67,-27
+p=21,100 v=5,70
+p=85,11 v=-35,63
+p=16,35 v=47,-63
+p=98,0 v=93,-2
+p=51,89 v=-9,85
+p=50,32 v=84,-42
+p=29,63 v=78,-76
+p=92,86 v=89,10
+p=27,11 v=-77,51
+p=65,21 v=-59,68
+p=84,68 v=20,-50
+p=19,2 v=-24,-36
+p=25,78 v=25,-85
+p=90,92 v=59,-87
+p=70,100 v=10,-52
+p=48,78 v=3,54
+p=85,81 v=30,44
+p=53,65 v=41,-67
+p=13,95 v=82,-29
+p=5,19 v=95,75
+p=37,96 v=-68,26
+p=83,16 v=-5,-9
+p=31,17 v=4,-20
+p=83,34 v=-83,-76
+p=50,88 v=93,-5
+p=66,36 v=-30,58
+p=11,29 v=-44,83
+p=31,31 v=-77,-51
+p=26,85 v=14,-18
+p=8,76 v=65,69
+p=60,70 v=-40,47
+p=69,70 v=22,64
+p=85,53 v=18,12
+p=97,93 v=-58,-57
+p=52,83 v=92,-9
+p=20,92 v=30,50
+p=88,73 v=32,3
+p=83,16 v=-42,-14
+p=57,89 v=-29,20
+p=50,19 v=73,8
+p=8,101 v=-94,-68
+p=12,77 v=-4,-84
+p=63,28 v=-84,91
+p=46,25 v=13,-95
+p=93,21 v=88,-26
+p=10,54 v=-24,72
+p=69,16 v=-92,-30
+p=26,68 v=21,97
+p=56,30 v=-90,-51
+p=62,69 v=-1,-50
+p=7,6 v=55,-39
+p=63,78 v=76,92
+p=57,55 v=-51,-19
+p=70,62 v=18,37
+p=88,26 v=-61,82
+p=80,50 v=-73,99
+p=40,1 v=-78,86
+p=35,85 v=81,-12
+p=17,74 v=56,47
+p=36,99 v=64,-15
+p=56,18 v=-29,-14
+p=42,44 v=-18,46
+p=84,4 v=-63,-2
+p=97,75 v=27,-62
+p=47,71 v=54,-50
+p=26,101 v=-67,-83
+p=30,74 v=-57,66

2024/go/day15/day15.go

@@ -0,0 +1,119 @@
+package day15
+
+import (
+	_ "adventofcode2024/utils"
+	_ "adventofcode2024/utils/grid2d"
+	_ "adventofcode2024/utils/grid2d"
+	"adventofcode2024/utils/inputs"
+	"fmt"
+	_ "regexp"
+	"strings"
+
+	_ "github.com/deckarep/golang-set/v2"
+)
+
+type Loc struct {
+	x int
+	y int
+}
+
+type Queue struct {
+	elements []Loc
+}
+
+// Push adds an element to the end of the queue
+func (q *Queue) Push(value Loc) {
+	q.elements = append(q.elements, value)
+}
+
+// Pop removes an element from the front of the queue
+func (q *Queue) Pop() (Loc, bool) {
+	if len(q.elements) == 0 {
+		return Loc{}, false // Return zero and false if the queue is empty
+	}
+	value := q.elements[0]
+	q.elements = q.elements[1:] // Remove the first element
+	return value, true
+}
+
+// IsEmpty checks if the queue is empty
+func (q *Queue) IsEmpty() bool {
+	return len(q.elements) == 0
+}
+
+func Part1(input string) int {
+	var val int
+	var rloc Loc
+	in := strings.Split(input, "\n\n")
+	dirs := map[rune][2]int{
+		'<': {-1, 0},
+		'>': {1, 0},
+		'^': {0, -1},
+		'v': {0, 1},
+	}
+	grid := inputs.ToGrid2D(in[0], "\n", "", ',', func(c string) rune { return rune(c[0]) })
+	directions := strings.ReplaceAll(in[1], "\n", "")
+	fmt.Printf("%v\n", grid.StringWithFormatter(formatter))
+	fmt.Printf("%v\n", directions)
+	found := false
+	for x := 0; x < grid.SizeX(); x++ {
+		if found {
+			break
+		}
+		for y := 0; y < grid.SizeY(); y++ {
+			if grid.Get(x, y) == '@' {
+				rloc = Loc{x: x, y: y}
+				found = true
+				break
+			}
+		}
+	}
+	fmt.Printf("Robot: %v\n", rloc)
+	for _, dir := range directions {
+		q := &Queue{}
+		x := rloc.x
+		y := rloc.y
+	Loop:
+		for {
+			x += dirs[dir][0]
+			y += dirs[dir][1]
+			switch grid.Get(x, y) {
+			case 'O':
+				q.Push(Loc{x: x, y: y})
+			case '.':
+				for !q.IsEmpty() {
+					grid.Set(x, y, 'O')
+					loc, _ := q.Pop()
+					fmt.Printf("%d,%d\n", loc.x, loc.y)
+					//					grid.Set(loc.x, loc.y, 'O')
+					x -= dirs[dir][0]
+					y -= dirs[dir][1]
+				}
+				grid.Set(rloc.x, rloc.y, '.')
+				rloc.x = x
+				rloc.y = y
+				grid.Set(rloc.x, rloc.y, '@')
+				break Loop
+			case '#':
+				break Loop
+			}
+		}
+		//		fmt.Printf("%v\n", grid.StringWithFormatter(formatter))
+	}
+	for x := 0; x < grid.SizeX(); x++ {
+		for y := 0; y < grid.SizeY(); y++ {
+			if grid.Get(x, y) == 'O' {
+				val += (100 * y) + x
+			}
+		}
+	}
+	return val
+}
+
+func Part2(input string) int {
+	return 0
+}
+
+func formatter(p rune, x int, y int) string {
+	return string(p)
+}

2024/go/day15/day15_test.go

@@ -0,0 +1,57 @@
+package day15
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`##########
+#..O..O.O#
+#......O.#
+#.OO..O.O#
+#..O@..O.#
+#O#..O...#
+#O..O..O.#
+#.OO.O.OO#
+#....O...#
+##########
+
+<vv>^<v^>v>^vv^v>v<>v^v<v<^vv<<<^><<><>>v<vvv<>^v^>^<<<><<v<<<v^vv^v>^
+vvv<<^>^v^^><<>>><>^<<><^vv^^<>vvv<>><^^v>^>vv<>v<<<<v<^v>^<^^>>>^<v<v
+><>vv>v^v^<>><>>>><^^>vv>v<^^^>>v^v^<^^>v^^>v^<^v>v<>>v^v^<v>v^^<^^vv<
+<<v<^>>^^^^>>>v^<>vvv^><v<<<>^^^vv^<vvv>^>v<^^^^v<>^>vvvv><>>v^<<^^^^^
+^><^><>>><>^^<<^^v>>><^<v>^<vv>>v>>>^v><>^v><<<<v>>v<v<v>vvv>^<><<>^><
+^>><>^v<><^vvv<^^<><v<<<<<><^v<<<><<<^^<v<^^^><^>>^<v^><<<^>>^v<v^v<v^
+>^>>^v>vv>^<<^v<>><<><<v<<v><>v<^vv<<<>^^v^>^^>>><<^v>>v^v><^^>>^<>vv^
+<><^^>^^^<><vvvvv^v<v<<>^v<v>v<<^><<><<><<<^^<<<^<<>><<><^^^>^^<>^>v<>
+^^>vv<^v^v<vv>^<><v<^v>^^^>>>^^vvv^>vvv<>>>^<^>>>>>^<<^v>^vvv<>^<><<v>
+v^^>>><<^^<>>^v^<v^vv<>v^<<>^<^v^v><^<<<><<^<v><v<>vv>>v><v^<vv<>v^<<^`)
+	require.Equal(t, 10092, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`##########
+#..O..O.O#
+#......O.#
+#.OO..O.O#
+#..O@..O.#
+#O#..O...#
+#O..O..O.#
+#.OO.O.OO#
+#....O...#
+##########
+
+<vv>^<v^>v>^vv^v>v<>v^v<v<^vv<<<^><<><>>v<vvv<>^v^>^<<<><<v<<<v^vv^v>^
+vvv<<^>^v^^><<>>><>^<<><^vv^^<>vvv<>><^^v>^>vv<>v<<<<v<^v>^<^^>>>^<v<v
+><>vv>v^v^<>><>>>><^^>vv>v<^^^>>v^v^<^^>v^^>v^<^v>v<>>v^v^<v>v^^<^^vv<
+<<v<^>>^^^^>>>v^<>vvv^><v<<<>^^^vv^<vvv>^>v<^^^^v<>^>vvvv><>>v^<<^^^^^
+^><^><>>><>^^<<^^v>>><^<v>^<vv>>v>>>^v><>^v><<<<v>>v<v<v>vvv>^<><<>^><
+^>><>^v<><^vvv<^^<><v<<<<<><^v<<<><<<^^<v<^^^><^>>^<v^><<<^>>^v<v^v<v^
+>^>>^v>vv>^<<^v<>><<><<v<<v><>v<^vv<<<>^^v^>^^>>><<^v>>v^v><^^>>^<>vv^
+<><^^>^^^<><vvvvv^v<v<<>^v<v>v<<^><<><<><<<^^<<<^<<>><<><^^^>^^<>^>v<>
+^^>vv<^v^v<vv>^<><v<^v>^^^>>>^^vvv^>vvv<>>>^<^>>>>>^<<^v>^vvv<>^<><<v>
+v^^>>><<^^<>>^v^<v^vv<>v^<<>^<^v^v><^<<<><<^<v><v<>vv>>v><v^<vv<>v^<<^`)
+	require.Equal(t, 0, r)
+}

2024/go/day15/input.txt

@@ -0,0 +1,71 @@
+##################################################
+#...O.#..O....##O..OO.#O..#.#.......OO...#O.#OO..#
+#O#..OO...O..O.O.....O.O.O....OO#.....O#.O.OO..O.#
+#........O....#...O......O.OO...#..O.O.#O#....O..#
+#..O.OO..O..O.#..O.O.OO.O...O...O......#O.....O..#
+#..OO.....O.OO.O#.......O.........O.....O.O.O....#
+#.O.#.O.O#......OO........O.O.....OO..O.O.O.#.#O.#
+#........#.....#.##O....O.O..OOO.......OOO.#O....#
+#.O#.#...OO.....#.......O...O...#O.O.......OO..OO#
+#.O...O..#O...#O..O.........O.O..OO..O.......O.OO#
+#O.O......O.OO..O.O.......O.OO#O.##...#....#O.O.O#
+#.O...O.OO.O....O..O.O...O...#.O....OO..O.O#O#OO.#
+#.....O.O..#O.....O.O..##O.O#OO...O...O.O.O......#
+##..O...O..OO.O.O.O..OO........#.##.........O.O..#
+#..O...O.OO..OOO.O...#..#.........#.O....OO......#
+#O....OOO.OO...O##.O.OO..O.O.....O.O.OOO....O.O.O#
+#O.O..OO.O..OO............O....O....O..OO...OO..##
+#.O...O.O.O.....O..O.O...O.#.......OOO...........#
+#O.O...O.....#..O..#O...O.O.O....O#...#.###.....O#
+#.O...O.O..#O.#.OO.......O.OO.O...O...........O..#
+##O.#O....O.#............O..O..O.....O..O..OO....#
+##..#.OO.O.OO.#.O....O...#........#........O.O...#
+#..O.OO...O....#..OO.O...........OOOO#..OO#O.....#
+#OO.O#...#..#...O#........O.OOO...OO....#O.OO#OOO#
+#...OOO............#O.#.@...O.....O#.#.O...O..O..#
+#...O...OO.#..O......O..............#OOO......OOO#
+#..#OO...O.#O......O..OO.O#...O....OO..O...O.O#O.#
+#.#.##...#O........#.O.....#O#.O.OO..OOO..#..O...#
+#.#....#...O..O#O..OOO.....#....#......O...O...#.#
+#....O....O......O.O.O..........O.O..O.O......O..#
+#.#OO#O.OO............O##.##O.O#.O...O#.........O#
+##.O.#..........#......#OOOO.OO.#.O.O.O.....O..#.#
+#O.....#OO.....O..............#...O.O..O.....OO#.#
+#O.O.O..O#OO.O.O....O..O......O..O........OO.....#
+##O....O...............................#.O.....O##
+##..O...#...O.........O#...#O...O.OO......OO.O..O#
+#O..OO.....OOOO.#......O.#OO..O.O...O.O...O.O.O#.#
+#..O.....O.O........O.....O.....O#....OO##OOO..#O#
+#O..##....OOO..O#.O....O.#...O.....O.O.O......O.O#
+#..OO.#O.......O.OO.O#O.O.....O.....OO..OO.OOOO..#
+#.#.#OO.O..O.O........O#.#...#..O.O.O.#.O..OO.O.O#
+#..O#.OO.O.#.....O...O..OO#..O...O.O#...O.....#.O#
+#.OO.OO....O.O..O..#OO.....#......#.#OO..#.#O.O#.#
+#...O....#..#......O....O..O#O...O....OO.......O.#
+#.#.....O#.......O..O..#O.OOOO..........O.O......#
+#.O.O.....OO.O.O.O..#O.O.O..O.OO....O....##.....##
+#O..#.OOO##....O.O..OOOO.O...O..O#..........O....#
+##.O##...O.O.....O.O#...O.........#...........OOO#
+#O#O.....#..O.OOO...O..OO.....OOO............#O..#
+##################################################
+
+^^<^>^^<<^v>^><^^^<v<v^>^^<><^v>v<^vv>^v<^>>v>^vv<<vv>>>>>>v^>v>^>^v<^v^<v^<^v>>^^>v<<>>^v^<v<v>v<v<v^<>>^>v^>^^^<^<v<v<<<v<^vv>^v>>v<v^>><vvv>^>v<^^vvv<>vvv<^v<>v><><^^<>v^^<^><v^><>>^^>v^<v>>^<><<^><<>v>>vvv<^^v^v^><vv>>v^^><v^<<^v>^vv<^<^<^<><>>>^><vv>>^<v^<><><^v<^<^v<^^>^<><<^<<^vv^^v<vv^^>^<^<v^v^^<v^>^v<vvv^vv<^^<^^>v>>^v>^v><v^^^v>^<^<v<^>>^><>^v<>v>^^^<^vv^^<^v<vv>><^^^v<<>>>^<^^>^<v>v>><v^v<<<v>^<vv<^<v^>^<^<v^<>^><v<>^>><<^><vv>>vv<>v^<vvv^<v><v^vv>^<<><vvv>^<><>^^v<^v<<>vv><^>><^<<v<^>^>>^^>v<^>v^>^<vv><v><<^^^^v^<>^>^v^^v<v^<v>v<><<<v>vv^v><vv^>>>v>>>>><v<vvvv<<^v>^v>^<><<<><>v<vv<v><>^vv>v<>^v^<>>v<v>>>v^>^<vv^^<v<^<^>vv^vvv^^<<>vv>^>^v>>v^^vv<^v>^^vv<>^v>^>v^^<>^^><vvvvvv<^^>^^v<>^^^<^^<>^>^v><v><<>>^<>>v>>^><^>v<v><>v^v<v><>^<<>>v>^v<vv><>^v<^>^^v>v>>^<^^^<<vvv><<v><<>vvv^v><<v^vv><^^^v^^^>v><<^^v>vv^v><v>^>^v<>>vv<<^v<v><>v><^><>>^vv><>><<vv^v<^^>><<>>v>><><vv>v^^<^<v<<^vv^<^^<v^<vv<<v<>v<>^<^<^>v^^^>>v<^^<^^^>^^>^>^>^^<><vvv>v>v<vv<^v<^>vv^<vv>v^>^<^<>v>^^>v<^>v>v>><>
+^vv>>>^vv><^v^<>v>^><<v>^^<v^v<v^>^>^v>><>>^>^<<^^v^^vv>^v^<<v>^v^>v<v>v<<>^>vvv>v>^vvv>>vv^>v^^v^^v<v^v>v^^<><<<^^><<^<vv<>>>>^<>v><v>>^v<v<<vv>>v>><>v><<^v^><>v><v^^<>v>^>>^^><>v<v<^vv<^v>>^><v>^v>^>><<<^vv<>^<<^><^<<><>vv^^v<<>v>v^vvv<v^>>^>^>^<>v<>vv>^><vv>>v<v<>^^v<>><>>v<>>^^<>v^<v^v^v>vvv<><^^v^>vv<<v>^^>>>v>^>^^><<^v><v^>^^>>^^>v<<<v^><><<><>vv^>v>v^>vv><^<v^><>><<>^>vv<<<v>>v><^^<v^><v>^>v^^<^v>v^<<v^>><v^>^<<>^^vvv>vvv><<><^><>>><<>>^><v<<v><^<v<>>^><><^^vv<^>^vvv<^>>><<^>><^v<v^<vv<v><<v^^v^<><^>v>^v>v<v<<>>><v>^vv^>>><v^><^>v^<>>v>v^v^><^<vv>v^v^<^v<>^><^>>v^^>v<^^^<v^^v>v>v>^^^<^^><v<vv<^vv^<vv<<<><><^>>v<>v<^v>^^<>v^>^v<v^<vv^v>v<<<v>^<^v^^^>v^vv<>vv>^^<<><^><vv>><<^v<^>v>>^>><<^<>vv^>v><>^vv^^v>v<<>^<><^^>^^><^>>^v>vvvv>^>v><<^<v^v<^<<^^<>^><^v^<<v<>^v><^>vvv><^v<>><<^^>^<^<<v^^^<^v><<<v<<>v>^v^>^>vv^<><v^^<><><>^^<^v^^>^^^^^vv<<<v^<vv<<<v^^<v<^<<v><vv^<<<<<<^^^vv><^vv<<<>><>v>vv>^^^<^><><<><<v<><>><^vv^^<<v^<^^^>v<>^^^^<><^^^<vv><>^^<><<>><vv>>^<>v<v^v<<vv^>^^>^^>>^v>v^
+^>>v<><<<vvv^^^<vv><<<vvv>v<<<<^v<>v<<^vv<^vv<^^>>v^>^v^>^<>>>v<^<<^^>>vv^^<^^^>^><vv<v<v^^v<vv^<<^v<<^v<v<v><>>>vv<>vv<>^^>vv^vvvv<v>vv<vv^^>^<v<vvvv^>v>^^<<^<<<>v>^<^<v>v>vv<<v<^vv>>^^<v<v<v<>>^>><^<v<<>^^v<>^<^v>^><><<vv<^><<^><>^>^^vv^>^<<<^>^v>^v<<<>^^<^^<<^<v><^^<>^<<<^v^<>^>vv<vvv>v><<<^vv^<^><>><><>v^^>v<^<^vv<>><^>v>^v<><>>^v^^^^v^<<><^^v>><>^v^<v^><>>^<vv>v>v^^v<^v><>>v<v^v<v<v>><^^<<^v<>v<<^<v>^>><<<^>>v<v<<^^v<v>v>^<^>^<^v^<^v>>>>>><^vv<v<v^<^v^<<><^>v>>v<vv>^<vv<<v^v>>>vvv<v<vv<<<^v<v<>^vvvvvvv>^^>>>^v<>><>^<<<>^><^^v^v<>><^>^>v><<v>>>v^>^<^<^<v^vv>><<^<>vv^^v^<>v<<<^>>v<v>vv^>><<^<^^><^^>>>v>^^^>^v<v>v<v^<v^>^<<>^^^<^v>><>>>>v^<>>^^^<>v^^v^>><<>v>>^>^vvv<v>><>^v>vv^v>><vvvvv^>^><>^>v<<^>><^^v><^<v^^>>^^>^>vv><<<^vvvvv<^<^<<vv>^<^^<>v^^>^v<^^v<>v>^>^>vv^>v>^<vvv<<^<>^<^<^^v><^<^^v^<vv>v<>>^>v^v<^v>>><^v<^<<^v<^vv^^><>^v<><^><v^v>v<>vvv^^^>^^^^^v<^^^<v^<^>^v<<v<^^v<^v^<<^>><<>>>v^v<>v^^^>^vv>v>v>>><><v^<v><vv<>v>vvvv>v>>vvv><v<v^<^<v<^vvv>^<v<>v<>^^v^<^vv^^>^^>>vv<><^vv><v<
+<^^>^<^>><<>>v>vv^vv<^<<<<>^v<<>>^v<>>>^v><<<><^<^><>>><vv<v<v^<>>v^>v<><v^><^v>v^>^^v^^>v<<v<<v^^^<>v<^v^^<<<^v^^vv^v<v>v>vv^>^^v<vv^<<^>v^<^^<vvv><^>>>>^><<>^><vvv>^v^<^v>v^v><<>v^<>>v^^^<v>><<^>^>^<^vvv>><v<<>^<^><<v>^v>^^<><^^^>^><vvvv><^^><v>>v^vvv><vvv<^^v^v<v<><^<<v^>v>>^<<<<>^v<v>v^>^<^<<>><^>vvv>v>>v^><><>vv>>^vv>>vv<^<>^^^>^>v>^v><^v^>v^<v^v^^^>^v^>^>vv<vvv^<<^<>vvv<vv^<vv<<<v^^>v<<^^<^<>^^^v<v<^>><>><<<^^<>v<>vv<^<^v^v>v>v^vv^v<<v<^>^v<v^^v>^<<<<^^<<>v<<<<<>v<^<v>vv<>^<><v^^v^^<v^^<<vv<v^vv^>><><^<^^<^<>v<>^<<<<v^<<^<<vv<v<>>vv<<vv>^vv<>^^<>v><<v>><vv^^^^><<<^<^>v^vv>vvvv^>v<<v<>^^^v<<<><v<v^^><v^v>>^>>^>><v<<>vv>>>v>v^<<<v<^<<>>^^<v^vv<^^<v<v^^<>v>v^<vv<v<<>>^<^^<^^>><^^>v>v>^^>v>>>^<>^^v^v>^^<^v>^v><<<vv>v^>v^<v^><v^<^>vvv><<^>>v^^>>>^<v^v^>vvv<v<>v^>^^v^^>vvv>^v^^<v^<<v^<<<>^v^<^<vvv<<<<<v<<vv^<v>>v>>><v>^^<><>v<vv^>v>^vvv<<>>v<v<>^<>^<^<<v<<vv^<v^^<<^<^v<^<^>vv^<<vv^<^vv>v>v><^^>^><vv>vv<^<v<>^<^^v<><vvv<<>^vvv^^v<v<v<^<>^vv>>^>v>v<^^<>vv>^<<>^^^>^<^<^>v>vv^^><>^>^v>>^<>
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2024/go/day16/day16.go

@@ -0,0 +1,225 @@
+package day16
+
+import (
+	"adventofcode2024/utils/dijkstra"
+	"adventofcode2024/utils/grid2d"
+	"adventofcode2024/utils/inputs"
+	"fmt"
+	_ "strings"
+)
+
+type (
+	Vec  struct{ x, y int }
+	Dir  struct{ x, y int }
+	Cell rune
+	Move struct {
+		p Vec
+		d Dir
+	}
+	Maze struct {
+		height, width int
+		start         Vec
+		end           Vec
+		grid          *grid2d.Grid[Cell]
+	}
+)
+
+const (
+	WALL     Cell = '#'
+	CORRIDOR Cell = '.'
+	START    Cell = 'S'
+	END      Cell = 'E'
+	PATH     Cell = '*'
+)
+
+var (
+	NORTH      = Dir{0, -1}
+	EAST       = Dir{1, 0}
+	SOUTH      = Dir{0, 1}
+	WEST       = Dir{-1, 0}
+	DIRECTIONS = []Dir{NORTH, EAST, SOUTH, WEST}
+)
+
+func Part1(input string) int {
+	maze := Maze{}.Parse(input)
+	fmt.Println(maze)
+	data := inputGraph(*maze)
+	graph := dijkstra.CreateGraph(data)
+	data.From.Label = "EAST"
+	path, dist := dijkstra.GetShortestPath(data.From, data.To, graph)
+	for _, p := range path {
+		maze.grid.Set(p.X, p.Y, PATH)
+	}
+	fmt.Println(maze)
+	return dist
+}
+func Part2(input string) int {
+	maze := Maze{}.Parse(input)
+	fmt.Println(maze)
+	data := inputGraph(*maze)
+	graph := dijkstra.CreateGraph(data)
+	data.From.Label = "START"
+	data.To.Label = "NORTH"
+	paths, _ := dijkstra.GetAllShortestPaths(data.From, data.To, graph)
+	bestPaths := make(map[Vec]struct{})
+	for _, path := range paths {
+		for _, node := range path {
+			bestPaths[Vec{x: node.X, y: node.Y}] = struct{}{}
+		}
+	}
+	return len(bestPaths)
+}
+
+func inputGraph(maze Maze) dijkstra.InputGraph {
+	data := dijkstra.InputGraph{}
+	data.From = dijkstra.Point{X: maze.start.x, Y: maze.start.y, Label: "START"}
+	data.To = dijkstra.Point{X: maze.end.x, Y: maze.end.y, Label: "END"}
+	for y := 0; y < maze.height; y++ {
+		for x := 0; x < maze.width; x++ {
+			if maze.grid.Get(x, y) == WALL {
+				continue
+			}
+			for _, dir := range DIRECTIONS {
+				nx, ny := x+dir.x, y+dir.y
+				if nx < 0 || ny < 0 || nx >= maze.width || ny >= maze.height {
+					continue
+				}
+				if maze.grid.Get(nx, ny) == WALL {
+					continue
+				}
+				for _, d := range getAllowedDirections(dir) {
+					ss := dirToString(dir)
+					ds := dirToString(d)
+					data.Graph = append(data.Graph, dijkstra.InputData{
+						Source:      dijkstra.Point{X: x, Y: y, Label: ss},
+						Destination: dijkstra.Point{X: nx, Y: ny, Label: ds},
+						Weight: func() int {
+							if dir == d {
+								return 1
+							} else {
+								return 1001
+							}
+						}(),
+					})
+				}
+			}
+		}
+	}
+
+	data.Graph = append(data.Graph, dijkstra.InputData{
+		Source:      dijkstra.Point{X: maze.end.x, Y: maze.end.y, Label: "END"},
+		Destination: dijkstra.Point{X: maze.end.x, Y: maze.end.y, Label: dirToString(EAST)},
+		Weight:      0,
+	})
+	data.Graph = append(data.Graph, dijkstra.InputData{
+		Source:      dijkstra.Point{X: maze.end.x, Y: maze.end.y, Label: "END"},
+		Destination: dijkstra.Point{X: maze.end.x, Y: maze.end.y, Label: dirToString(WEST)},
+		Weight:      0,
+	})
+	data.Graph = append(data.Graph, dijkstra.InputData{
+		Source:      dijkstra.Point{X: maze.end.x, Y: maze.end.y, Label: "END"},
+		Destination: dijkstra.Point{X: maze.end.x, Y: maze.end.y, Label: dirToString(NORTH)},
+		Weight:      0,
+	})
+	data.Graph = append(data.Graph, dijkstra.InputData{
+		Source:      dijkstra.Point{X: maze.end.x, Y: maze.end.y, Label: "END"},
+		Destination: dijkstra.Point{X: maze.end.x, Y: maze.end.y, Label: dirToString(SOUTH)},
+		Weight:      0,
+	})
+
+	data.Graph = append(data.Graph, dijkstra.InputData{
+		Source:      dijkstra.Point{X: maze.start.x, Y: maze.start.y, Label: "START"},
+		Destination: dijkstra.Point{X: maze.start.x, Y: maze.start.y, Label: dirToString(EAST)},
+		Weight:      0,
+	})
+	data.Graph = append(data.Graph, dijkstra.InputData{
+		Source:      dijkstra.Point{X: maze.start.x, Y: maze.start.y, Label: "START"},
+		Destination: dijkstra.Point{X: maze.start.x, Y: maze.start.y, Label: dirToString(WEST)},
+		Weight:      2000,
+	})
+	data.Graph = append(data.Graph, dijkstra.InputData{
+		Source:      dijkstra.Point{X: maze.start.x, Y: maze.start.y, Label: "START"},
+		Destination: dijkstra.Point{X: maze.start.x, Y: maze.start.y, Label: dirToString(NORTH)},
+		Weight:      1000,
+	})
+	data.Graph = append(data.Graph, dijkstra.InputData{
+		Source:      dijkstra.Point{X: maze.start.x, Y: maze.start.y, Label: "START"},
+		Destination: dijkstra.Point{X: maze.start.x, Y: maze.start.y, Label: dirToString(SOUTH)},
+		Weight:      1000,
+	})
+
+	data.Graph = append(data.Graph, dijkstra.InputData{
+		Source:      dijkstra.Point{X: maze.start.x, Y: maze.start.y, Label: "EAST"},
+		Destination: dijkstra.Point{X: maze.start.x, Y: maze.start.y, Label: "NORTH"},
+		Weight:      1000,
+	})
+
+	return data
+}
+
+func dirToString(dir Dir) string {
+	switch dir {
+	case NORTH:
+		return "NORTH"
+	case EAST:
+		return "EAST"
+	case SOUTH:
+		return "SOUTH"
+	case WEST:
+		return "WEST"
+	default:
+		return "UNKNOWN"
+	}
+}
+
+func getAllowedDirections(direction Dir) []Dir {
+	switch direction {
+	case NORTH:
+		return []Dir{NORTH, EAST, WEST}
+	case SOUTH:
+		return []Dir{SOUTH, EAST, WEST}
+	case WEST:
+		return []Dir{WEST, NORTH, SOUTH}
+	case EAST:
+		return []Dir{EAST, NORTH, SOUTH}
+	}
+	return []Dir{}
+}
+
+func (m Maze) Parse(input string) *Maze {
+	m.grid = inputs.ToGrid2D(input, "\n", "", '?', func(c string) Cell { return Cell(c[0]) })
+	m.height, m.width = m.grid.SizeY(), m.grid.SizeX()
+	for y := 0; y < m.height; y++ {
+		for x := 0; x < m.width; x++ {
+			c := m.grid.Get(x, y)
+			switch c {
+			case WALL, CORRIDOR:
+				m.grid.Set(x, y, c)
+			case START:
+				m.grid.Set(x, y, CORRIDOR)
+				m.start = Vec{x, y}
+			case END:
+				m.grid.Set(x, y, CORRIDOR)
+				m.end = Vec{x, y}
+			}
+		}
+	}
+	return &m
+}
+
+func (m *Maze) String() string {
+	s := ""
+	for y := 0; y < m.height; y++ {
+		for x := 0; x < m.width; x++ {
+			if y == m.start.y && x == m.start.x {
+				s += string(START)
+			} else if y == m.end.y && x == m.end.x {
+				s += string(END)
+			} else {
+				s += string(m.grid.Get(x, y))
+			}
+		}
+		s += "\n"
+	}
+	return s
+}

2024/go/day16/day16_test.go

@@ -0,0 +1,47 @@
+package day16
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`###############
+#.......#....E#
+#.#.###.#.###.#
+#.....#.#...#.#
+#.###.#####.#.#
+#.#.#.......#.#
+#.#.#####.###.#
+#...........#.#
+###.#.#####.#.#
+#...#.....#.#.#
+#.#.#.###.#.#.#
+#.....#...#.#.#
+#.###.#.#.#.#.#
+#S..#.....#...#
+###############`)
+	require.Equal(t, 7036, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`#################
+#...#...#...#..E#
+#.#.#.#.#.#.#.#.#
+#.#.#.#...#...#.#
+#.#.#.#.###.#.#.#
+#...#.#.#.....#.#
+#.#.#.#.#.#####.#
+#.#...#.#.#.....#
+#.#.#####.#.###.#
+#.#.#.......#...#
+#.#.###.#####.###
+#.#.#...#.....#.#
+#.#.#.#####.###.#
+#.#.#.........#.#
+#.#.#.#########.#
+#S#.............#
+#################`)
+	require.Equal(t, 64, r)
+}

2024/go/day16/input.txt

@@ -0,0 +1,141 @@
+#############################################################################################################################################
+#.....#.....#...#.................#...#.......#.........#...#.......#...#.......#.......#...#...#.....#...#.......................#...#....E#
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+#...#.#.#.#...#.....#...#.#.....#...#...#.#...#.#...#...#.#.#...#.#...#.#.#...#...#...#.....#.#.#.#.#...#...#.....#.#.#.....#.....#.#.#...#.#
+#.#.###.#.###.#.#####.#.#.###.###########.#.#####.###.###.###.###.###.#.#.#.#.#.###.#######.#.#.#.#.#########.#####.#.#.#####.#####.#.###.#.#
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+###.#.#####.###.#.###.###.###.#.#.###.#.###.#####.#.#.###.#.#.#.###.#.#.#######.###.#.###.#.###.#.#######.#.#######.#.#.#######.#######.#.#.#
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+#.......#.#.#...#...#...#...........................#.#.#...#.#...#.#...#...#.....#...#.#.....#.....#...#.#.#...................#.#.#...#...#
+#.#.###.#.#.###.#.#.#########.#.###.#.#.###.#.#########.#.#.###.###.#######.#####.#.#.#.#.#####.#######.#.#.###.#.#########.#.#.###.#.#.###.#
+#.#.#.#...#...#.#.#.......................#.#.#.........#.#.#...#.#.#.....#.#...#...#...#...#...#.......#.#.....#...#.......#.#.#...#.....#.#
+#.#.#.#####.#.#.###.###########.#########.#.#.#####.#####.#.#.###.#.#.#.###.#.#.#############.###.#######.#########.#.#######.#.#.#####.#.#.#
+#S..........#.#...........................#.........#.....#.......#...#.......#...............#...................#...........#.........#...#
+#############################################################################################################################################

2024/go/day17/day17.go

@@ -0,0 +1,91 @@
+package day17
+
+import (
+	"encoding/json"
+	"fmt"
+	"regexp"
+	"strings"
+	"golang.org/x/exp/slices"
+
+
+	"adventofcode2024/utils"
+
+)
+
+type Opcode int
+
+const (
+	adv     Opcode = 0
+	bxl		Opcode = 1
+	bst   	Opcode = 2
+	jnx     Opcode = 3
+	bxc     Opcode = 4
+	out	 	Opcode = 5
+	bdv 	Opcode = 6
+	cdv 	Opcode = 7
+
+)
+
+func Part1(input string) string {	
+	m := regexp.MustCompile(`[\d,]+`).FindAllString(input, -1)
+	a := utils.MustAtoi(m[0])
+	b := utils.MustAtoi(m[1])
+	c := utils.MustAtoi(m[2])
+
+	var pgm []int
+	json.Unmarshal([]byte("["+m[3]+"]"), &pgm)
+
+	fmt.Printf("%d %d %d %v\n", a, b, c, pgm)
+	out := fmt.Sprint(run(a, b, c, pgm))
+	out = fmt.Sprint(strings.Trim(strings.ReplaceAll(out, " ", ","), "[]"))
+	return out
+}
+
+func Part2(input string) int {
+	m := regexp.MustCompile(`[\d,]+`).FindAllString(input, -1)
+	b := utils.MustAtoi(m[1])
+	c := utils.MustAtoi(m[2])
+
+	var pgm []int
+	json.Unmarshal([]byte("["+m[3]+"]"), &pgm)
+
+	fmt.Printf("%d %d %v\n", b, c, pgm)
+
+	a := 0
+	for n := len(pgm) - 1; n >= 0; n-- {
+		a <<= 3
+		for !slices.Equal(run(a, b, c, pgm), pgm[n:]) {
+			a++
+		}
+	}
+	return a
+}
+
+func run(a, b, c int, pgm []int) (output []int) {
+	for ip := 0; ip < len(pgm); ip += 2 {
+		operand := pgm[ip+1]
+		combo := []int{0, 1, 2, 3, a, b, c}[operand]
+
+		switch pgm[ip] {
+		case int(adv):
+			a >>= combo
+		case int(bxl):
+			b ^= operand
+		case int(bst):
+			b = combo % 8
+		case int(jnx):
+			if a != 0 {
+				ip = operand - 2
+			}
+		case int(bxc):
+			b ^= c
+		case int(out):
+			output = append(output, combo%8)
+		case int(bdv):
+			b = a >> combo
+		case int(cdv):
+			c = a >> combo
+		}
+	}
+	return output
+}

2024/go/day17/day17_test.go

@@ -0,0 +1,25 @@
+package day17
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`Register A: 729
+Register B: 0
+Register C: 0
+
+Program: 0,1,5,4,3,0`)
+	require.Equal(t, "4,6,3,5,6,3,5,2,1,0", r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`Register A: 2024
+Register B: 0
+Register C: 0
+
+Program: 0,3,5,4,3,0`)
+	require.Equal(t, 117440, r)
+}

2024/go/day17/input.txt

@@ -0,0 +1,5 @@
+Register A: 61156655
+Register B: 0
+Register C: 0
+
+Program: 2,4,1,5,7,5,4,3,1,6,0,3,5,5,3,0

2024/go/day18/day18.go

@@ -0,0 +1,126 @@
+package day18
+
+import (
+	"adventofcode2024/utils"
+	"adventofcode2024/utils/dijkstra"
+	"adventofcode2024/utils/grid2d"
+	"fmt"
+	"strings"
+)
+
+type (
+	Vec  struct{ x, y int }
+	Dir  struct{ x, y int }
+	Cell rune
+	Move struct {
+		p Vec
+		d Dir
+	}
+	Maze struct {
+		height, width int
+		start         Vec
+		end           Vec
+		grid          *grid2d.Grid[Cell]
+	}
+)
+
+const (
+	WALL     Cell = '#'
+	CORRIDOR Cell = '.'
+	START    Cell = 'S'
+	END      Cell = 'E'
+	PATH     Cell = '*'
+)
+
+var (
+	NORTH      = Dir{0, -1}
+	EAST       = Dir{1, 0}
+	SOUTH      = Dir{0, 1}
+	WEST       = Dir{-1, 0}
+	DIRECTIONS = []Dir{NORTH, EAST, SOUTH, WEST}
+)
+
+func Part1(input string) int {
+	maze := Maze{}.Parse(input, 1024)
+	fmt.Println(maze)
+	data := inputGraph(*maze)
+	graph := dijkstra.CreateGraph(data)
+	path, dist := dijkstra.GetShortestPath(data.From, data.To, graph)
+	for _, p := range path {
+		maze.grid.Set(p.X, p.Y, PATH)
+	}
+	fmt.Println(maze)
+	return dist
+}
+func Part2(input string) int {
+	maze := Maze{}.Parse(input, 2877)
+	fmt.Println(maze)
+	data := inputGraph(*maze)
+	graph := dijkstra.CreateGraph(data)
+	_, count := dijkstra.GetShortestPath(data.From, data.To, graph)
+	return count
+}
+
+func inputGraph(maze Maze) dijkstra.InputGraph {
+	data := dijkstra.InputGraph{}
+	data.From = dijkstra.Point{X: maze.start.x, Y: maze.start.y}
+	data.To = dijkstra.Point{X: maze.end.x, Y: maze.end.y}
+	for y := 0; y < maze.height; y++ {
+		for x := 0; x < maze.width; x++ {
+			if maze.grid.Get(x, y) == WALL {
+				continue
+			}
+			for _, dir := range DIRECTIONS {
+				nx, ny := x+dir.x, y+dir.y
+				if nx < 0 || ny < 0 || nx >= maze.width || ny >= maze.height {
+					continue
+				}
+				if maze.grid.Get(nx, ny) == WALL {
+					continue
+				}
+				data.Graph = append(data.Graph, dijkstra.InputData{
+					Source:      dijkstra.Point{X: x, Y: y},
+					Destination: dijkstra.Point{X: nx, Y: ny},
+					Weight:      1,
+				})
+			}
+		}
+	}
+
+	return data
+}
+
+func (m Maze) Parse(input string, bytes int) *Maze {
+	m.grid = grid2d.NewGrid(71, 71, CORRIDOR)
+	for _, line := range strings.Split(input, "\n") {
+		if bytes == 0 {
+			break
+		}
+		in := strings.Split(line, ",")
+		x := utils.MustAtoi(in[0])
+		y := utils.MustAtoi(in[1])
+		m.grid.Set(x, y, WALL)
+		bytes--
+	}
+	m.start = Vec{0, 0}
+	m.end = Vec{70, 70}
+	m.height, m.width = m.grid.SizeY(), m.grid.SizeX()
+	return &m
+}
+
+func (m *Maze) String() string {
+	s := ""
+	for y := 0; y < m.height; y++ {
+		for x := 0; x < m.width; x++ {
+			if y == m.start.y && x == m.start.x {
+				s += string(START)
+			} else if y == m.end.y && x == m.end.x {
+				s += string(END)
+			} else {
+				s += string(m.grid.Get(x, y))
+			}
+		}
+		s += "\n"
+	}
+	return s
+}

2024/go/day19/day19.go

@@ -0,0 +1,87 @@
+package day19
+
+import (
+	"sort"
+	"strings"
+)
+
+func Part1(input string) int {
+	in := strings.Split(input, "\n\n")
+	towels := strings.Split(in[0], ", ")
+	patterns := strings.Split(in[1], "\n")
+	//	fmt.Println(towels, patterns)
+	count := 0
+	not_possibles := make(map[string]bool)
+	for _, pattern := range patterns {
+		if isPossible(towels, pattern, not_possibles) {
+			//			fmt.Println(count, pattern)
+			count++
+		}
+	}
+	return count
+}
+
+func Part2(input string) int {
+	in := strings.Split(input, "\n\n")
+	towels := strings.Split(in[0], ", ")
+	sort.Strings(towels)
+	patterns := strings.Split(in[1], "\n")
+	//	fmt.Println(towels, patterns)
+	count := 0
+	memo := make(map[string]int)
+	for _, pattern := range patterns {
+		count += countPossible(sortStringsByPrefix(towels), pattern, memo)
+	}
+	return count
+}
+
+func isPossible(towels []string, pattern string, not_possibles map[string]bool) bool {
+	if pattern == "" {
+		return true
+	}
+	if not_possibles[pattern] {
+		return false
+	}
+	for _, towel := range towels {
+		if strings.HasPrefix(pattern, towel) {
+			if isPossible(towels, pattern[len(towel):], not_possibles) {
+				return true
+			}
+		}
+	}
+	not_possibles[pattern] = true
+	return false
+}
+
+func countPossible(towels map[byte][]string, pattern string, memo map[string]int) int {
+	if pattern == "" {
+		return 1
+	}
+
+	//If memo has key
+	if val, ok := memo[pattern]; ok {
+		return val
+	}
+
+	count := 0
+	for _, towel := range towels[pattern[0]] {
+		if strings.HasPrefix(pattern, towel) {
+			count += countPossible(towels, pattern[len(towel):], memo)
+		}
+	}
+
+	memo[pattern] = count
+
+	return count
+}
+
+func sortStringsByPrefix(slice []string) map[byte][]string {
+	result := make(map[byte][]string)
+	for _, str := range slice {
+			result[str[0]] = append(result[str[0]], str)
+		}
+	for _, t := range result {
+		sort.Strings(t)
+	}
+	return result
+}

2024/go/day19/day19_test.go

@@ -0,0 +1,42 @@
+package day19
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`r, wr, b, g, bwu, rb, gb, br
+
+brwrr
+bggr
+gbbr
+rrbgbr
+ubwu
+bwurrg
+brgr
+bbrgwb`)
+	require.Equal(t, 6, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`r, wr, b, g, bwu, rb, gb, br
+
+brwrr
+bggr
+gbbr
+rrbgbr
+ubwu
+bwurrg
+brgr
+bbrgwb`)
+	require.Equal(t, 16, r)
+}
+
+func TestPart2Long(t *testing.T) {
+	r := Part2(`rrgwru, gwubwg, wgbbw, bwb, ugrgw, uwgguuw, wuggb, bgwb, ubrr, grruuub, rwbwgbub, wwwggg, uuw, gubuu, urwb, bubg, bubb, rruruuu, ubgr, uw, urugg, wubuu, brwb, buw, bgug, wgbwwrb, rwrgrr, gwgr, rrwrg, wwbwgbw, gguu, rgg, bwg, ruurrwg, wbu, ggg, wrw, brbw, wbb, rrbgg, gbb, gwwrubwu, rwgu, grgwwu, wguu, rwg, wbwug, rbur, gwg, wbrugu, wbwwgu, wbbuw, rwrg, rgru, rgb, bwwrg, bwur, rrubwu, gwb, ugwur, wbguwb, rbu, ubrwgw, ruwbr, wbbu, rrbwbg, rgub, rwgb, urwg, bbw, bugg, rugwg, rwbrwww, wuru, guu, brwbg, ug, ruuwruw, bguww, wwrgrurg, rrbgr, uubwurb, brrrwgg, bur, urg, rbg, wruw, gr, ugb, wwrbgrg, wbuuw, bbugu, uug, rrbb, rrbw, bgr, wwwru, rgu, urr, rg, wbgbru, brrgu, gubu, rurgr, wwbrgg, ruurwgwg, rbb, rbrugwb, gwwrbg, bwuuwrg, wu, b, bgwrb, uwggr, rgbb, rww, wgwb, gwgwr, uwbb, uww, gu, ubwuu, wbwwwug, rurwru, rr, rrg, uggr, bgwu, wbgbu, urggw, br, gubgugr, wgrb, bbgrrbu, brbg, wrg, bgrb, rwbwwur, uwr, bubu, grwb, ubb, wr, bbbgwr, bug, uwgwuwu, grb, bgw, uuu, ugr, wgbbgu, gbg, bgwub, urbgrw, rbruwg, gb, bbwgwur, uwbgwrr, ggrb, wbrrwrbu, gbbugrb, ub, rwb, gwr, ruwu, gurgu, rru, uuwwgwuw, bw, ruwbbb, rbgrgu, wuwu, grrugr, wgr, rbbr, rugr, rrrrbww, bwrr, wrbbr, uuwgr, gug, wwb, rgur, brbrr, gguw, grwubrg, rrrr, uwb, wuwwrrwg, gwbggr, rwrub, wuur, gub, rbgb, urrbubrr, uwubu, brbb, bwbr, bww, ruuubwu, ugbbbr, bub, rrug, wub, gruu, uu, bbu, gbbr, urrg, buwu, grw, grbbbu, bgb, ugubg, uwww, urw, wwubruww, buurb, www, bguurr, wwgu, wgb, ruwub, wggggbg, urrb, gbwuw, ubrrg, wrr, gbubgg, gw, wuw, wuug, wwrb, wgg, rgugrru, rgwrbr, guurrg, bgu, rurgb, gwggb, bwgbbw, ggwb, ubwgw, bbg, rbr, wgru, urwr, brr, rgbr, rgr, wwg, guwuru, uuggg, rrw, buu, urb, guwg, ugwwbuwb, rubb, brbuww, rwugru, ubu, wwub, bgwgb, wrug, rug, w, brgg, wwugwruw, ggrwb, bbwuwuu, uub, rrr, ggbrr, wbur, wurbru, wgu, brb, urbbb, gburbww, wbrgruru, rbugr, gubw, wgwgg, rwr, ugw, gggg, gwrwrg, rrub, gbwgg, grg, uwuur, gbwbbb, guw, gbwbb, uwu, ruw, bwr, rwgub, rbw, ggbwr, u, gwu, rrurrb, gwgg, uugwrbr, brw, ugburg, rwu, wwu, wbr, ruwgr, gbwbur, rwgr, rwbww, rbgr, rgbub, rbbuw, ruu, bwgw, bbwg, ubr, gurr, wwr, wwwguu, gbw, ggw, gru, wug, rubwrbrr, wbrrrr, uru, wbgw, wgur, uurgg, bbb, rbwgwbur, wwbwur, bbgubw, gww, brg, ugu, rgrgw, wwrrgugu, rrrwuww, uwwrb, wrb, rrgg, wubgrrb, bwwgrbww, gbr, gwrwu, brgwwbu, urrwub, rbru, bwrgrr, brwuwrb, guuur, wb, bbrb, brww, wuwrww, bu, rgw, rwbwug, bbug, urrgr, bg, bgg, wbgwbgru, wbrru, uwbbr, wbg, gwwur, gur, ubwb, gubbb, bb, wrugr, grur, rb, uwubrg, bwgrw, gbug, g, wuwubgw, ubw, urgu, rrrg, uwg, bbww, uwgrug, ww, ggu, gwbuwu, rgggwgr, wugw, gbrrg, ugg, bwu, ubuur, uurrw, uwwug, bgww, ubg, rw, gwgbwrg, wuu, rbgbg, buwbur, rub, ugbwwrgu, gbww, wbw, gurbwu, bruw, rggrbrgw, wguwu, ubwbwr, ru, uwur, ggb, uurwg, wguubgr, wru, rbrbr, rbwr, wwwrbb, urww, rur, bru, bbbwrw, uwrwrr, ruww, ububbgr, rrb, bggrwg, bbr, wrwrb, bwgwrbg, grbuwg, gg, ubuurwg, uur, guguwb, rugurgbw, bbuwbb
+
+wrbwgruugbbgwwurggwrgrrrurbgwbgggwbbgwgbrwggwur`)
+	require.Equal(t, 16, r)
+}

2024/go/day19/input.txt

@@ -0,0 +1,402 @@
+rrgwru, gwubwg, wgbbw, bwb, ugrgw, uwgguuw, wuggb, bgwb, ubrr, grruuub, rwbwgbub, wwwggg, uuw, gubuu, urwb, bubg, bubb, rruruuu, ubgr, uw, urugg, wubuu, brwb, buw, bgug, wgbwwrb, rwrgrr, gwgr, rrwrg, wwbwgbw, gguu, rgg, bwg, ruurrwg, wbu, ggg, wrw, brbw, wbb, rrbgg, gbb, gwwrubwu, rwgu, grgwwu, wguu, rwg, wbwug, rbur, gwg, wbrugu, wbwwgu, wbbuw, rwrg, rgru, rgb, bwwrg, bwur, rrubwu, gwb, ugwur, wbguwb, rbu, ubrwgw, ruwbr, wbbu, rrbwbg, rgub, rwgb, urwg, bbw, bugg, rugwg, rwbrwww, wuru, guu, brwbg, ug, ruuwruw, bguww, wwrgrurg, rrbgr, uubwurb, brrrwgg, bur, urg, rbg, wruw, gr, ugb, wwrbgrg, wbuuw, bbugu, uug, rrbb, rrbw, bgr, wwwru, rgu, urr, rg, wbgbru, brrgu, gubu, rurgr, wwbrgg, ruurwgwg, rbb, rbrugwb, gwwrbg, bwuuwrg, wu, b, bgwrb, uwggr, rgbb, rww, wgwb, gwgwr, uwbb, uww, gu, ubwuu, wbwwwug, rurwru, rr, rrg, uggr, bgwu, wbgbu, urggw, br, gubgugr, wgrb, bbgrrbu, brbg, wrg, bgrb, rwbwwur, uwr, bubu, grwb, ubb, wr, bbbgwr, bug, uwgwuwu, grb, bgw, uuu, ugr, wgbbgu, gbg, bgwub, urbgrw, rbruwg, gb, bbwgwur, uwbgwrr, ggrb, wbrrwrbu, gbbugrb, ub, rwb, gwr, ruwu, gurgu, rru, uuwwgwuw, bw, ruwbbb, rbgrgu, wuwu, grrugr, wgr, rbbr, rugr, rrrrbww, bwrr, wrbbr, uuwgr, gug, wwb, rgur, brbrr, gguw, grwubrg, rrrr, uwb, wuwwrrwg, gwbggr, rwrub, wuur, gub, rbgb, urrbubrr, uwubu, brbb, bwbr, bww, ruuubwu, ugbbbr, bub, rrug, wub, gruu, uu, bbu, gbbr, urrg, buwu, grw, grbbbu, bgb, ugubg, uwww, urw, wwubruww, buurb, www, bguurr, wwgu, wgb, ruwub, wggggbg, urrb, gbwuw, ubrrg, wrr, gbubgg, gw, wuw, wuug, wwrb, wgg, rgugrru, rgwrbr, guurrg, bgu, rurgb, gwggb, bwgbbw, ggwb, ubwgw, bbg, rbr, wgru, urwr, brr, rgbr, rgr, wwg, guwuru, uuggg, rrw, buu, urb, guwg, ugwwbuwb, rubb, brbuww, rwugru, ubu, wwub, bgwgb, wrug, rug, w, brgg, wwugwruw, ggrwb, bbwuwuu, uub, rrr, ggbrr, wbur, wurbru, wgu, brb, urbbb, gburbww, wbrgruru, rbugr, gubw, wgwgg, rwr, ugw, gggg, gwrwrg, rrub, gbwgg, grg, uwuur, gbwbbb, guw, gbwbb, uwu, ruw, bwr, rwgub, rbw, ggbwr, u, gwu, rrurrb, gwgg, uugwrbr, brw, ugburg, rwu, wwu, wbr, ruwgr, gbwbur, rwgr, rwbww, rbgr, rgbub, rbbuw, ruu, bwgw, bbwg, ubr, gurr, wwr, wwwguu, gbw, ggw, gru, wug, rubwrbrr, wbrrrr, uru, wbgw, wgur, uurgg, bbb, rbwgwbur, wwbwur, bbgubw, gww, brg, ugu, rgrgw, wwrrgugu, rrrwuww, uwwrb, wrb, rrgg, wubgrrb, bwwgrbww, gbr, gwrwu, brgwwbu, urrwub, rbru, bwrgrr, brwuwrb, guuur, wb, bbrb, brww, wuwrww, bu, rgw, rwbwug, bbug, urrgr, bg, bgg, wbgwbgru, wbrru, uwbbr, wbg, gwwur, gur, ubwb, gubbb, bb, wrugr, grur, rb, uwubrg, bwgrw, gbug, g, wuwubgw, ubw, urgu, rrrg, uwg, bbww, uwgrug, ww, ggu, gwbuwu, rgggwgr, wugw, gbrrg, ugg, bwu, ubuur, uurrw, uwwug, bgww, ubg, rw, gwgbwrg, wuu, rbgbg, buwbur, rub, ugbwwrgu, gbww, wbw, gurbwu, bruw, rggrbrgw, wguwu, ubwbwr, ru, uwur, ggb, uurwg, wguubgr, wru, rbrbr, rbwr, wwwrbb, urww, rur, bru, bbbwrw, uwrwrr, ruww, ububbgr, rrb, bggrwg, bbr, wrwrb, bwgwrbg, grbuwg, gg, ubuurwg, uur, guguwb, rugurgbw, bbuwbb
+
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2024/go/go.mod

@@ -7,6 +7,6 @@ require golang.org/x/exp v0.0.0-20221208152030-732eee02a75a
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/stretchr/testify v1.10.0 // direct
+	github.com/stretchr/testify v1.10.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )