Merge branch 'tmp'

This reverts commit 08b38c2bd3.

2024/go/day06/day06.go

@@ -0,0 +1,291 @@
+package day06
+
+import (
+	"adventofcode2024/utils/grid2d"
+	"adventofcode2024/utils/inputs"
+	"fmt"
+	_ "strings"
+)
+
+type Direction int
+
+const (
+	_ Direction = iota
+	Up
+	Down
+	Left
+	Right
+)
+
+type Pos struct {
+	x int
+	y int
+}
+type Loc struct {
+	dir   Direction
+	pos   Pos
+	count int
+}
+
+type Point struct {
+	dirs    []Direction
+	display string
+}
+
+func (d Direction) String() string {
+	return [...]string{"-", "Up", "Down", "Left", "Right"}[d]
+}
+
+func (l Loc) String() string {
+	return fmt.Sprintf("Direction: %s, Position: %d %d", l.dir, l.pos.x, l.pos.y)
+}
+
+func Part1(input string) int {
+	var loc Loc
+	grid := inputs.ToGrid2D(input, "\n", "", "", func(c string) string { return c })
+	for x := 0; x < grid.SizeX(); x++ {
+		for y := 0; y < grid.SizeY(); y++ {
+			if grid.Get(x, y) == "^" {
+				loc = Loc{dir: Up, pos: Pos{x: x, y: y}}
+			}
+			if grid.Get(x, y) == "v" {
+				loc = Loc{dir: Down, pos: Pos{x: x, y: y}}
+			}
+			if grid.Get(x, y) == ">" {
+				loc = Loc{dir: Right, pos: Pos{x: x, y: y}}
+			}
+			if grid.Get(x, y) == "<" {
+				loc = Loc{dir: Left, pos: Pos{x: x, y: y}}
+			}
+		}
+	}
+	fmt.Println(grid.Matrix())
+	fmt.Printf("%v\n", loc)
+	grid.Set(loc.pos.x, loc.pos.y, "X")
+	loc.count = 1
+	move1(&loc, grid)
+	return loc.count
+}
+
+func Part2(input string) int {
+	var loc Loc
+	grid := inputs.ToGrid2D(input, "\n", "", Point{}, func(c string) Point { return Point{dirs: make([]Direction, 1), display: c} })
+	for x := 0; x < grid.SizeX(); x++ {
+		for y := 0; y < grid.SizeY(); y++ {
+			if grid.Get(x, y).display == "^" {
+				loc = Loc{dir: Up, pos: Pos{x: x, y: y}}
+			}
+			if grid.Get(x, y).display == "v" {
+				loc = Loc{dir: Down, pos: Pos{x: x, y: y}}
+			}
+			if grid.Get(x, y).display == ">" {
+				loc = Loc{dir: Right, pos: Pos{x: x, y: y}}
+			}
+			if grid.Get(x, y).display == "<" {
+				loc = Loc{dir: Left, pos: Pos{x: x, y: y}}
+			}
+		}
+	}
+	fmt.Println(grid.Matrix())
+	fmt.Printf("%v\n", loc)
+	point := grid.Get(loc.pos.x, loc.pos.y)
+	grid.Set(loc.pos.x, loc.pos.y, Point{dirs: append(point.dirs, Up), display: "X"})
+	for x := 0; x < grid.SizeX(); x++ {
+		for y := 0; y < grid.SizeY(); y++ {
+			grid = inputs.ToGrid2D(input, "\n", "", Point{}, func(c string) Point { return Point{dirs: make([]Direction, 1), display: c} })
+			p := grid.Get(x, y)
+			if p.display == "." {
+				grid.Set(x, y, Point{dirs: p.dirs, display: "#"})
+				l := loc
+				if isLoop(&l, grid) {
+					loc.count++
+				}
+				grid.Set(x, y, Point{dirs: p.dirs, display: "."})
+			}
+		}
+	}
+	return loc.count
+}
+
+func isLoop(loc *Loc, grid *grid2d.Grid[Point]) bool {
+	for {
+		_, _, err := move2(loc, grid)
+		if err != nil { return false }
+		if contains(loc.dir, grid.Get(loc.pos.x, loc.pos.y)) {
+			return true
+		} else {
+			p := grid.Get(loc.pos.x, loc.pos.y)
+			grid.Set(loc.pos.x, loc.pos.y, Point{dirs: append(p.dirs, loc.dir), display: "X"})
+		}
+	}
+}
+
+func Part2b(input string) int {
+	var loc Loc
+	grid := inputs.ToGrid2D(input, "\n", "", Point{}, func(c string) Point { return Point{dirs: make([]Direction, 1), display: c} })
+	for x := 0; x < grid.SizeX(); x++ {
+		for y := 0; y < grid.SizeY(); y++ {
+			if grid.Get(x, y).display == "^" {
+				loc = Loc{dir: Up, pos: Pos{x: x, y: y}}
+			}
+			if grid.Get(x, y).display == "v" {
+				loc = Loc{dir: Down, pos: Pos{x: x, y: y}}
+			}
+			if grid.Get(x, y).display == ">" {
+				loc = Loc{dir: Right, pos: Pos{x: x, y: y}}
+			}
+			if grid.Get(x, y).display == "<" {
+				loc = Loc{dir: Left, pos: Pos{x: x, y: y}}
+			}
+		}
+	}
+	fmt.Println(grid.Matrix())
+	fmt.Printf("%v\n", loc)
+	point := grid.Get(loc.pos.x, loc.pos.y)
+	grid.Set(loc.pos.x, loc.pos.y, Point{dirs: append(point.dirs, Up), display: "X"})
+	loc.count = 0
+	for {
+		_, _, err := move2(&loc, grid)
+		if err != nil {
+			break
+		}
+		if contains(loc.dir, grid.Get(loc.pos.x, loc.pos.y)) {
+			loc.count++
+			break
+		}
+	}
+	return loc.count
+}
+
+func move1(loc *Loc, grid *grid2d.Grid[string]) int {
+	return -1
+}
+
+func move2(loc *Loc, grid *grid2d.Grid[Point]) (int, int, error) {
+	x, y, err := doMove(loc, grid)
+	if err != nil {
+		return x, y, err
+	}
+	if x == loc.pos.x && y == loc.pos.y {
+		move2(loc, grid)
+	}
+	return x, y, nil
+}
+
+func canBlock(loc *Loc, point Point) bool {
+	val := false
+	switch loc.dir {
+	case Up:
+		if contains(Right, point) {
+			val = true
+		}
+	case Down:
+		if contains(Left, point) {
+			val = true
+		}
+	case Left:
+		if contains(Up, point) {
+			val = true
+		}
+	case Right:
+		if contains(Down, point) {
+			val = true
+		}
+	}
+	return val
+}
+
+func contains(v Direction, point Point) bool {
+	for _, d := range point.dirs {
+		if d == v {
+			return true
+		}
+	}
+	return false
+}
+
+func checkMove(loc *Loc, grid *grid2d.Grid[string]) bool {
+	switch loc.dir {
+	case Down:
+		if loc.pos.y+1 >= grid.SizeY() {
+			return false
+		}
+		if grid.Get(loc.pos.x, loc.pos.y+1) == "#" {
+			loc.dir = Left
+		} else {
+			loc.pos.y++
+		}
+	case Up:
+		if loc.pos.y-1 < 0 {
+			return false
+		}
+		if grid.Get(loc.pos.x, loc.pos.y-1) == "#" {
+			loc.dir = Right
+		} else {
+			loc.pos.y--
+		}
+	case Left:
+		if loc.pos.x-1 < 0 {
+			return false
+		}
+		if grid.Get(loc.pos.x-1, loc.pos.y) == "#" {
+			loc.dir = Up
+		} else {
+			loc.pos.x--
+		}
+	case Right:
+		if loc.pos.x+1 >= grid.SizeX() {
+			return false
+		}
+		if grid.Get(loc.pos.x+1, loc.pos.y) == "#" {
+			loc.dir = Down
+		} else {
+			loc.pos.x++
+		}
+	}
+	return true
+}
+
+func doMove(loc *Loc, grid *grid2d.Grid[Point]) (int, int, error) {
+	x := loc.pos.x
+	y := loc.pos.y
+	switch loc.dir {
+	case Down:
+		if loc.pos.y+1 >= grid.SizeY() {
+			return x, y, fmt.Errorf("outside")
+		}
+		if grid.Get(loc.pos.x, loc.pos.y+1).display == "#" {
+			loc.dir = Left
+		} else {
+			loc.pos.y++
+		}
+	case Up:
+		if loc.pos.y-1 < 0 {
+			return x, y, fmt.Errorf("outside")
+		}
+		if grid.Get(loc.pos.x, loc.pos.y-1).display == "#" {
+			loc.dir = Right
+		} else {
+			loc.pos.y--
+		}
+	case Left:
+		if loc.pos.x-1 < 0 {
+			return x, y, fmt.Errorf("outside")
+		}
+		if grid.Get(loc.pos.x-1, loc.pos.y).display == "#" {
+			loc.dir = Up
+		} else {
+			loc.pos.x--
+		}
+	case Right:
+		if loc.pos.x+1 >= grid.SizeX() {
+			return x, y, fmt.Errorf("outside")
+		}
+		if grid.Get(loc.pos.x+1, loc.pos.y).display == "#" {
+			loc.dir = Down
+		} else {
+			loc.pos.x++
+		}
+	}
+	return x, y, nil
+}

2024/go/day06/day06_test.go

@@ -0,0 +1,35 @@
+package day06
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`....#.....
+.........#
+..........
+..#.......
+.......#..
+..........
+.#..^.....
+........#.
+#.........
+......#...`)
+	require.Equal(t, 41, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`....#.....
+.........#
+..........
+..#.......
+.......#..
+..........
+.#..^.....
+........#.
+#.........
+......#...`)
+	require.Equal(t, 6, r)
+}

2024/go/day06/input.txt

@@ -0,0 +1,130 @@
+...#..................#...................#......................#..............................#.............................#...
+....#.......................#........#.#..............##...........#.....#..........#..........................#..................
+.............#........................................................................#.........#.#..#..#..........#..............
+..........#.......#..........#..................#........##...................#..............#....................................
+....................#..........................................................#..#.....................................#.........
+....#............................#..............................................#.....................#..........##....#..........
+.......#.............#......................................................................#.............#.........#.............
+....###......................#....#...........#.....#................................#..........................#.................
+..........#..#...........#..#........................................................#.....#...........#................#.........
+..#....#......#....#....#...................................................................#.....................................
+....................#............#............................................#......#....#...............................#.......
+..........#.......#.........#.......#.............................................................................................
+.......#...#.......................................#...................#..........................................................
+.......#........#............................#.....#.......#..............................................#..................#...#
+.....................#.................................#................#...#...............#.....#.#..........................#..
+.....#..........................................#......................#.............##..............................#........#...
+.....#......#.........................#..........................#..........................................................#..#..
+.#......#.............#......#.................................................#.....#...................##......#................
+.............................................................................##...................................................
+........................................#.......................................#........#.............................#.#.......#
+...........#.....................................#.............................#......#......#..#....................#..#.........
+.............................................#.......................#..................##....#.....#.............................
+........................#..............................................................#..........................................
+#..............#.........................#........#...#...............#..............#..................#....................##...
+...#...#.............................#.......#................................................#........................#....#.....
+.....#.........................#..#.......................#..........#.....................#..................#.#.....#...........
+..................#........#..#.......#...................................................................................#....#..
+..#...#...............................................#.#..#........................................................#....#......#.
+...............#...............#..........................#............................#..........#.............#.................
+............#.....#........#.........................................................#........#........#.....#........#......#....
+............................#.........#....#........#.....#...#.............#.................................#...................
+........#..................#....#..........................................................#.#.#..................................
+....................................................................................................................#.............
+#............#.............#..................#......................................................................#............
+...............................#....#..........#...........##........................................................#.........#.#
+................#.........................................#.................................................#........#............
+..............................................#............#................#........#........................#...................
+..................#.........#..........................#.............#...............#............#....................#..........
+........................#...#...............................................#..............#.....#.....................#..........
+...........#.......................................#..............................#..................#....#...##..................
+#...............#..................#...............................#...............................#.....................#........
+.............#...............................................................##...................................................
+.................#.............#.......................#...#............#.#....#................................#...........#.....
+#......#......#..................................##.................#.#...............................#...........................
+.#...............#..........#...............................................#...#..........#..........#...........................
+.....................................#............................#....#.............................................#...#........
+......#...#.............#.#....................#.........#..........##.................................#..........#..........#....
+.............................#..................#....#..............##.......................#.#.....#........#...................
+.................................................#.#......................................................#................#......
+......................................#..........................................#......#.........................................
+#....................#...........................................................#..................#.............................
+.....#.........#...................................................#....#.#....#.#.........#......................................
+........#..........#......#.............#................................#.....#................#.................................
+...........#................................#...........#..........#......#.............#........................#................
+.......#...............#....................#..#................................................#.................................
+.....................#.........#..#............#..........#...........#...........#...............................#...............
+................#...#........#...........#..........................................................#..#...................#......
+.........................................................#.....................#...#......................#.#....................#
+................#......#....#.#..............#............#.......................................................................
+..........#.....................................#......................................................................#..........
+#......................................#.......#.....##..#.....................#.........#.......#................................
+........#...#..............#....................#................................#..............................................#.
+.##............................................................................#......#................................#..........
+.#........................#..............#..............................................#........#.....#.......#..................
+#......................................#.....................#...................................................................#
+............................#.....#.....#............#...............#...#.......#.........#......................................
+.#.........................#.......................#.........#.......#.................#............................#..#..........
+.............................................................................................................#........##..........
+...........#...#...#.#................#.....................................#........#............................................
+......#.......................#..........#.......#................................................................#...............
+........#....#........#..................#....##.....#............#..............................#...........#...........#..#.....
+..................................#...............................................................................#...............
+.....................#.#.......................#....................................#.............................................
+........................................................................................#.........#.................#.........#...
+..........................#..........#....#..........................................#.......................#............#.#.....
+...............................................#.#....#...............................#...................#......................#
+.....#...........#........#.#.......#.............................#..................#............................................
+...............#.........................................................#....................#.................#.............#...
+#....................................##..........#................................................................#...............
+...............#.................#...#..............#......................................................#..............#.......
+...................#......#.............................................#......................................................#.#
+..#.............#.......#......#....#..#..#.......................................................................................
+.........#....................................................#.....................................#..............#..............
+..............#..............#................................................................#.......................#...........
+..........................#.................#.......................................................##...................#.#......
+...............#..#...................................................................................................#.......###.
+...#.....................#..#........#..........#..................................................................##.............
+.................#.......................................###..............#.........................#.............................
+...#.....................................................#.......#..........................#................#..#.................
+...................................................#..................#.........................................................#.
+.....#.............#...................#...................#.....................................#................................
+.....................#.........................#......#...........................................................................
+...........#...............#......#.....##...#...#.............................................#........#.#...............#...#...
+..............#..............##...........#.......................#..#.^..........................................................
+...................#..............................................................................................................
+..................#.......#..........#.......#..................#..........#...................................#..................
+..............................................................................................#..................................#
+......................................................#................#......................#...................................
+..............#.........#..............................#.....................#......................#.............................
+#................#.........#................#.............................#......................#..#...#..............#..........
+.#..#........#................#...............#..................#........#.....................#............#........#...........
+.....................................................#.#.........#......................#.............................#........#..
+......................#.....................#..#......#..........................#............................#......#............
+......................#.........................#..#..................................#.......................#..............#....
+..........................#..................#.............#......................................................#...............
+..........................#....#........................................#..#...#....#.................#...........................
+.......#...........#.......................#............##........#....................................................#..........
+#..........................................................................#...........#..........................................
+............................................................#.................#..#........................................##......
+..#...............................................#....#.................................................##.....#...##.....#......
+...#.....##..............................#.........................................................#............#.................
+.....#....##............................#....##..........#...#....................................................................
+..................................................#..........................#.........##.......#.......................#.........
+.........#.....#..........#........#........................#.##..#............#.......................................#..........
+.....#...............#.......#..........#.#..........#.....................#.....................................#.....#..........
+....#......#............................................................................................##...#.#.#.........#......
+...........#........................#.....#....................#..................#.#........#....................................
+....................................................#................#.#................................................#.........
+..........#..............#.......................#.................#...................................#.............#.#......##..
+................##......................................................#.................#.......#.#....................#........
+................#......................................................#.............##...............#.....#......#.......#......
+..............................#............................#..........#...........#...............................................
+.......#.............#....................................................................#..............................#.#......
+...#.....................#.#...............................................................#...#..#....#..........................
+....#.........##......#..............................................................................#..................#.........
+....#..........................................#......#...................#........##............#................................
+..#.......#......#............#........#...#.#...........................#.......#................................................
+..........................#...#....................#...............#...#......#.#...#...#...............#.#.#.....................
+....##.#....................................................................#...#.....##........................#.##..............
+.............................................#....................................................................................

2024/go/day07/day07.go

@@ -0,0 +1,140 @@
+package day07
+
+import (
+	"adventofcode2024/utils"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+type Op int
+
+const (
+	Add Op = iota
+	Mul
+	Conc
+)
+
+func Part1(input string) int {
+	val := 0
+	lines := strings.Split(input, "\n")
+	for _, line := range lines {
+		parts := strings.Split(line, ":")
+		result := utils.MustAtoi(parts[0])
+		numStrings := strings.Fields(parts[1])
+		var numbers []int
+		for _, numStr := range numStrings {
+			num := utils.MustAtoi(numStr)
+			numbers = append(numbers, num)
+		}
+		bitmask := 1 << (len(numbers) - 1)
+		for i := 0; i < bitmask; i++ {
+			calc := 0
+			switch isNthBitSet(i, 0) {
+			case true:
+				calc = numbers[0] + numbers[1]
+			case false:
+				calc = numbers[0] * numbers[1]
+			}
+
+			for n := 1; n < len(numbers)-1; n++ {
+				switch isNthBitSet(i, n) {
+				case true:
+					calc = calc + numbers[n+1]
+				case false:
+					calc = calc * numbers[n+1]
+				}
+			}
+			if calc == result {
+				fmt.Printf("result: %v numbers:%v  count: %d\n", result, numbers, bitmask)
+				val += result
+				break
+			}
+		}
+	}
+	return val
+}
+
+func Part2(input string) int {
+	val := 0
+	lines := strings.Split(input, "\n")
+	for _, line := range lines {
+		parts := strings.Split(line, ":")
+		result := utils.MustAtoi(parts[0])
+		numStrings := strings.Fields(parts[1])
+		var numbers []int
+		for _, numStr := range numStrings {
+			num := utils.MustAtoi(numStr)
+			numbers = append(numbers, num)
+		}
+		operations := []Op{Add, Mul, Conc}
+		results := [][]Op{}
+		generatePermutations(operations, len(numbers)-1, []Op{}, &results)
+		for _, op := range results {
+			calc := 0
+			switch op[0] {
+			case Add:
+				calc = numbers[0] + numbers[1]
+			case Mul:
+				calc = numbers[0] * numbers[1]
+			case Conc:
+				calc = concat(numbers[0], numbers[1])
+			}
+
+			for n := 1; n < len(numbers)-1; n++ {
+				switch op[n] {
+				case Add:
+					calc = calc + numbers[n+1]
+				case Mul:
+					calc = calc * numbers[n+1]
+				case Conc:
+					calc = concat(calc, numbers[n+1])
+				}
+			}
+			if calc == result {
+				fmt.Printf("result: %v numbers:%v\n", result, numbers)
+				val += result
+				break
+			}
+		}
+	}
+	return val
+}
+
+func isNthBitSet(num, n int) bool {
+	return num&(1<<n) != 0
+}
+
+func getOp(row, col int) Op {
+	vals := []Op{Add, Mul, Conc}
+	// Column 0 cycles as row / 3
+	if col == 0 {
+		return vals[row/3]
+	}
+	// Column 1 cycles as row % 3
+	return vals[row%3]
+}
+
+// Recursive function to generate permutations
+func generatePermutations(ops []Op, n int, prefix []Op, results *[][]Op) {
+	if n == 0 {
+		// Append a copy of the current prefix to the results
+		*results = append(*results, append([]Op{}, prefix...))
+		return
+	}
+
+	// Iterate over all operations and build the combinations
+	for _, op := range ops {
+		generatePermutations(ops, n-1, append(prefix, op), results)
+	}
+}
+
+func concat(a, b int) int {
+	aStr := strconv.Itoa(a)
+	bStr := strconv.Itoa(b)
+
+	concatStr := aStr + bStr
+
+	result, _ := strconv.Atoi(concatStr)
+	return result
+}

2024/go/day07/day07_test.go

@@ -0,0 +1,47 @@
+package day07
+
+import (
+	"testing"
+	"github.com/stretchr/testify/require"
+	"fmt"
+)
+
+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`)
+	require.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`)
+	require.Equal(t, 11387, r)
+}
+
+func TestGetOp(t *testing.T) {
+	operations := []Op{Add, Mul, Conc} // Define the operations
+    X := 3 // Define the number of positions (columns)
+
+    // Start the recursive generation with an empty prefix
+	results := [][]Op{}
+    generatePermutations(operations, X, []Op{}, &results)
+	for _, op := range results {
+		fmt.Printf("%v\n", op)
+	}
+	r := Add
+	require.Equal(t, Add, r)
+}

2024/go/day07/input.txt

@@ -0,0 +1,850 @@
+16183610: 62 7 96 8 6 8 52 3 3 47
+408936528: 5 1 5 1 9 2 2 8 7 1 725 63
+20378697464: 101 893 487 2 6 4
+376576: 4 9 235 57 1 3 6 722 8
+431880008: 18 66 276 5 295 4 5 7 1
+379520346363: 858 95 723 8 92 7 9 2
+18243750: 76 24 3 750
+7302: 806 446 391 791 3
+18879037: 7 75 1 94 217 37
+3887037856: 805 64 71 7 9 856
+120267: 3 48 937 659 3 69
+757199: 86 2 69 7 7 8 80 5 8 743
+5835692: 349 65 110 8 1 8 35 4
+9693533: 560 33 54 523 251
+1691420808: 33 720 4 76 84 66
+27537: 5 2 2 4 296 73 89
+3099946535: 7 330 5 245 9 4 5 3 7 3 5
+2430252: 58 1 3 9 47 71 5 19 418
+379232792: 789 98 6 71 6 8 535 8 2
+11690268: 2 92 3 2 83 72 1 3 1 6 8 4
+65091: 225 4 895 1 9 6 5 6 81
+230263117372: 405 38 568 727 7 372
+1071440: 6 4 614 67 30 4 7 1 229
+60445800: 3 7 9 9 9 683 27 8 4 4
+6834722563: 95 43 29 182 9 317
+449482: 98 1 458 99 85
+381868494: 74 992 18 289 78
+42075: 86 3 28 14 38 18 225
+105275: 13 751 755 4 91
+1258023882: 4 79 534 502 61 3 3 9
+766505: 7 87 21 4 4 7 83 5
+4569436040: 355 7 6 3 4 7 8 753 4 29
+182512: 4 1 7 1 6 66 38 8 6 112
+238680: 9 42 36 65 2
+81450600: 235 52 86 6 275 2
+20684471: 2 989 98 2 4 237 3 7 59
+79521192: 48 98 9 91 5 15 29 18
+604195918: 756 74 12 2 9 52 7 8
+43646875223: 62 28 8 5 6 8 730 3 2 3
+24683153283: 5 12 2 2 462 2 72 24 3
+13641: 21 664 2 3 655 5 61
+23364264: 35 5 9 43 39 2 520 8 33
+1352375279: 9 21 54 9 84 61 527
+122558095823: 51 58 4 676 99 6 3 7 2 9
+9153847: 912 3 1 38 47
+623510: 25 63 6 30 892 86 2 5
+100277100: 352 773 45 20 90 22
+19779196416: 7 239 64 716 2 129
+5982828: 86 3 644 9 2 271 66 4
+1287462: 3 25 68 2 93 15 6 22
+11178753676: 9 9 69 3 7 2 4 8 2 6 8 8
+38798: 3 314 4 4 71 38
+15055: 1 43 7 52 3
+58769: 813 2 4 4 3 1 1 8 3 47 7 5
+716958509: 2 343 612 33 69 5
+1675: 1 28 41 19 467
+39178: 3 873 40 3 1 9
+708235: 340 13 9 2 50 385
+61112: 7 52 2 107 5
+9420: 2 9 5 70 4 13 2 468 8
+23543454: 8 478 2 87 242
+35262945144: 26 81 91 441 184
+357858: 68 4 6 9 92 7 9 92 54
+2718246046: 1 85 4 95 53 7 7 5 6 2 2 6
+575: 519 2 49 3 2
+1180: 172 18 58 44 888
+1206891306: 2 9 1 67 80 9 1 2 9 8 5 3
+1968096: 6 5 545 39 7 5 2 21 6 6 4
+74504: 744 97 7
+452256: 8 355 5 796 81 168
+418262248: 541 1 482 802 2
+152402250369: 4 87 8 8 6 319 65 369
+123797905: 9 7 550 577 1 7 2 5 3 5 7
+3129360: 73 1 7 5 62 59 20
+13030160: 58 9 4 748 65
+3758143: 7 80 6 44 6 7 1 4 17 9 4
+1058: 521 534 3
+6027582: 8 55 704 838 2
+55923132: 971 9 7 137 1 6
+42362711: 423 614 8 71 440
+74875: 89 83 85 4 57 94
+6528: 6 8 8 17
+376636: 7 9 301 12 636
+33983238: 77 8 38 925 422 51
+9773991: 76 738 2 998 6
+13324553022657: 7 4 20 5 9 5 30 22 646 9
+99691578: 5 71 1 9 4 7 325 7 1 54 7
+15561636: 4 3 74 7 10 9 7 6 6 3 3 1
+133680: 1 59 7 1 24 5
+768797: 956 3 8 375 7
+2192068: 4 4 7 2 7 22 7 2 9 97 76
+141515823: 4 8 51 515 449 3
+102779637: 902 41 6 251 3 920
+255504: 7 843 1 68 3
+6334426: 8 4 42 47 132 3 439 6
+1679200: 6 2 1 28 7 954 4 1 2 4 5
+743869: 686 85 6 56 893
+1740659638: 723 68 4 5 38 4 37 65 3
+38740803516: 696 4 198 64 36 439
+1445311524: 851 1 51 9 4 197 4 4 4
+82489: 6 13 27 26 153 22
+288151123: 5 8 95 3 4 121 6 7 5 7 7 8
+33615: 41 9 2 83 249
+235334584: 616 5 9 2 473 7 8
+18983872: 3 58 389 84 8
+966410: 117 12 622 477 3 5
+31850527: 318 32 17 741 787
+7766: 8 97 6
+3767400: 6 4 3 9 203 2 17 7 4 30
+8170454: 494 93 449 31 1
+56113624133: 5 4 7 6 502 7 9 71 7 35 3
+1070749: 2 60 64 3 986 4 6 4 9 1
+152169288123: 3 440 2 47 3 834 878 3
+23710639960: 7 7 6 2 3 4 2 395 81 2 4 4
+41133: 1 1 736 6 119 3 85 2 3 3
+2438060548: 872 65 66 8 16 5 308
+2150: 60 975 6 34 2
+42667317: 8 9 2 848 6 2 7 693
+99291: 8 52 97 811 115 69
+700480533: 152 24 4 995 533
+2043415727134: 437 668 53 7 6 6 5 13 4
+47685378032: 2 7 4 4 2 87 82 5 962 32
+1623679122582: 842 679 71 4 2 58 2
+13176069: 5 5 527 988 81
+402209662: 4 891 26 8 4 9 38 389
+62080: 86 718 329
+1056230: 475 2 5 2 553
+95017: 8 6 9 5 8 13 323 7 6 1 5 7
+130085288174: 9 9 2 9 674 36 4 2 17 4
+179095515: 2 38 6 7 6 26 9 36 8 27
+520128: 9 66 438 504
+110760: 3 8 4 7 4 60 71
+76246863: 2 80 3 3 5 75 7 761 791
+2167131616: 590 79 3 197 236 19 1
+243936484: 25 10 5 8 8 857 4
+88760: 305 4 30 6 2 9 1 70
+6539567445: 2 673 89 206 49 53 5
+802: 89 4 8 2 1 56
+198163: 55 9 8 5 5 514 273
+184378: 38 691 7 11 561
+342819000: 82 387 8 5 2 3 5 9 8 8 27
+10656324: 5 26 8 1 7 186 3 1 6 7 6
+552920982: 87 69 7 92 91 9 61 2
+20206: 1 63 1 86 79 535
+1555253: 731 36 853 960 53
+3143202608: 91 2 4 378 4 72 49 7
+108617320: 7 64 27 657 8 367 1 49
+1002415: 2 5 5 4 235 21 53 3 61 2
+554954: 96 720 227 9 8 7 1 99
+14766160525: 748 1 337 25 13 6 6 5 5
+26599060: 51 610 855 1 9
+313216: 70 93 6 92 8
+495206630906: 624 496 4 577 25 4 6
+852106300: 461 6 1 83 3 95 5 629
+338693777: 3 386 93 739 38
+84441: 50 93 2 18 647 45 13
+19591896: 3 47 87 143 888 8
+1215760: 88 32 8 7 760
+303: 8 64 9 215 7
+4493757702: 587 7 4 9 2 5 4 7 3 3 994
+45810: 6 54 4 7 4
+455911: 475 1 3 9 9 2 10 91 5 1
+21250549332: 9 7 6 6 51 18 183 43 8 9
+1651093: 716 6 3 3 1 4 1 8 8 52 4 5
+1425: 50 4 36 6 9
+240413184: 8 5 6 5 7 6 8 7 34 9 96 8
+9353: 10 13 9 8 1 1 4 4 3 7 5 8
+2098356329412: 6 57 264 714 1 5 7 651
+1366070: 18 3 2 99 220 237
+166196809: 68 59 291 20 7 284 9
+40834936: 405 659 51 3 1
+37929239: 5 739 66 518 39
+332660900: 25 96 954 572 541
+17248552687: 71 8 6 71 3 56 8 6 88
+736: 2 97 58 4 6 9 5 62 6 8 7 5
+1113308: 7 4 9 3 1 515 9 6 7 840 1
+1047862: 99 5 552 863 1
+8679: 9 6 32 5 39
+17123332: 150 3 542 72 38
+14301196: 810 535 6 33 446
+13953852: 82 2 21 94 18 844 1
+30194: 5 4 5 3 487
+299623: 40 908 79 4 55
+45472: 3 56 56 29 7
+4534682: 9 17 6 96 6 52 92 159 2
+182860020: 664 873 836 35 9
+2594594: 2 7 5 20 6 8 6 594 7 1 1
+5956711: 1 3 88 2 900 8 68 3 61
+513431: 641 64 8 98 21
+1690136: 197 191 66 66 8
+50985: 32 9 59 3 3
+1540800567: 15 30 4 16 535 567
+393181: 3 3 3 2 6 9 295 43 4 69
+152631244: 89 18 287 808 44
+49366847: 9 60 5 831 99 551 2
+47525635: 433 4 2 212 359 256 3
+313329721: 139 788 41 18 458 4 9
+48862422: 1 6 40 331 4 254 500 9
+39443910: 87 42 1 849 170 237
+130906800: 207 85 93 16 5
+220175705: 42 3 2 654 89 35 79 95
+14111: 1 6 5 8 6 8 143 510 4 9 5
+409336410: 846 720 10 8 7 5 2 1 7 6
+113011515265: 9 3 39 7 61 5 2 663 605
+2387490: 6 9 7 5 221 80 60 70 8 5
+7712: 2 7 1 155 606 2
+8043: 210 91 58 790 7
+146645: 4 407 30 3 122
+8480556: 1 8 5 922 657
+689065610: 7 141 2 698 10
+2753326: 1 141 6 5 4 1 9 39 643
+345873: 7 265 3 8 26 1 47
+74885173: 372 7 670 8 2 85 9 8 3
+136583527: 6 6 8 8 3 9 8 5 51 822 7
+3089340323: 8 64 8 1 90 477 2 4 53 3
+1096918: 195 6 886 9 920
+5367398: 535 68 80 25 98
+3976108135: 7 9 2 5 1 1 1 6 31 33 7 56
+2496005: 8 19 199 55 71
+2893997: 2 3 6 9 5 19 88 9 502 7
+557376309: 295 7 7 1 2 623 27 699
+42567659: 42 480 1 875 5 9
+15723798791671: 4 926 456 7 6 791 671
+91: 3 1 87
+75030526368: 250 695 9 692 78 8 96
+17385: 560 19 3 2 3
+616920: 3 60 879 1 582
+584294213: 8 346 7 7 4 213
+4724: 9 416 7 467
+155165: 4 11 95 2 648 4 19 125
+981426041: 4 83 7 71 3 50 9 4 5
+19972184: 2 5 31 7 2 231 2 4 4 62
+549451: 7 6 741 734 53
+5081833: 4 950 6 996 2 1 6 6 7 3 1
+1988310268: 9 3 5 707 744 14 6 8 2
+96053133326: 5 804 8 8 192 972 8 7 2
+3528: 3 11 28 3 3
+24189396: 8 3 2 171 4 4 33 28
+864165: 9 4 78 73 795
+26433000: 667 5 1 6 660
+8858: 38 1 4 206
+3200393280: 50 1 3 912 7 940 79
+2445982082: 49 1 7 94 4 86 7 64 2
+3488032730490: 73 5 6 8 57 7 8 938 490
+10071162: 8 381 15 137 3 8 8 9 1
+444: 69 6 30
+28452288677408: 480 45 5 2 6 7 90 658 8
+2593: 860 1 1 3 7
+198443470: 7 506 8 78 72 97 94
+75507: 754 2 2 85
+564275: 3 3 767 4 3 6 3 515 9 5 6
+1226: 58 4 1 276 887
+1416: 6 3 4 25 55 36
+4946042400: 9 751 929 60 65
+10626120960: 5 1 280 6 7 4 8 672 235
+222300: 10 494 15 1 3
+15905: 39 6 13 3 27 29
+89152410253: 1 27 8 2 2 6 8 8 1 518 5 3
+347293: 7 6 5 61 1 64 336 1 659
+397401: 7 7 5 20 9 9 43 1 3 7 1 3
+38394: 6 466 2 1 81
+120391: 4 9 145 4 3 7 9 8 2 6 927
+110645540: 5 180 267 1 2 9 2 143 4
+87614568: 2 4 63 32 73 213 591 4
+4709992455381: 3 6 7 2 2 955 791 9 159
+6834689: 27 6 194 8 3 689
+768: 1 16 4 5 694
+320720507: 39 660 890 7 2 7 9
+349171872: 11 36 32 82 1 89 9 6 56
+2144800: 47 79 3 5 32 25 7
+4415: 1 1 2 8 3 6 1 7 799 8 4 3
+77208: 2 322 34 7 96
+70838: 5 209 55 6 76 52 2 88
+711169603810: 9 1 9 2 20 80 74 761 1 5
+6894733854: 684 60 84 6 90 3 4 21 2
+5086572: 316 31 296 9 3 7 1 8 28
+2928408191557: 394 991 42 5 5 4 75 7
+509332682: 5 1 4 37 834 58 7 5 68 2
+13102440337: 1 6 3 780 5 8 3 37
+10878341: 9 90 612 170 45 41
+498132911: 4 911 685 999 89
+958999: 683 23 61 6 5 17 722
+143343: 88 59 9 92 751 210 3
+2743510584: 6 706 6 385 584
+251973: 424 66 5 8 9
+10183308: 169 709 9 5 3 9 67 2 46
+749315: 464 4 4 68 10 2 2 203
+92707239: 6 522 50 4 2 74 1 6 25 8
+82155646350715: 4 87 2 84 9 463 507 15
+87924480: 281 975 789 320
+60415: 5 804 3 23 5
+971347: 83 13 9 2 47
+17037310: 7 811 3 6 310
+15333: 535 78 95 99 19
+23713: 3 2 39 519 877
+29532875: 29 5 32 563 118 194
+6455904009: 221 6 9 4 2 4 26 112 9
+57785406: 96 140 7 55 186 26 6 7
+48: 1 3 12
+215140: 8 317 5 3 8 4 4 40 9 3 2 2
+9406542: 9 5 39 9 5 653 511 219
+8396187: 7 904 477 3 148 87 2
+734384430: 56 485 9 1 507 4 9 130
+484993118067: 81 402 993 345 6
+287773: 1 783 2 814 267 7 4 7 3
+36777312: 47 6 66 8 247
+4740447723: 2 36 3 10 3 355 8 73 1 3
+866755680: 460 3 3 991 1 5 6 6 19
+290326138: 5 285 317 8 83 38
+13602050748: 801 13 5 1 49 7 314 99
+61360: 9 543 8 53 60
+1787: 321 5 82 6 3 80 9
+233760: 7 429 313 5 4 77 4 296
+7665: 87 5 11 17 83
+26991479: 26 1 8 6 6 6 12 7 7 3 5 76
+18712: 6 74 13 974 56 1 7 9 7 3
+217: 7 87 2 3 26
+64867314: 2 90 9 5 8 492 1 4 1 257
+318200694: 2 3 739 7 1 861 63
+3282485321: 82 4 248 521 3 106
+156568734: 7 2 8 6 4 36 769 7 5 1 6 9
+832433113: 36 909 158 161 1
+33661685163: 7 2 7 42 49 1 9 80 342 3
+1924152: 5 83 51 9 677 998 8
+5297870114599: 141 899 89 5 839 99
+429345221: 9 471 63 7 45 2 21
+656: 7 27 9 15 7 2
+75577: 34 855 85 6 6
+1215357: 2 922 57 28 210 29 3
+1595334418735: 6 676 272 86 184 3 35
+5453: 7 683 5 31 542 94
+154076: 3 414 4 74 1 1 88 1 604
+355: 44 8 3
+33370224183: 71 470 224 122 64
+39385509782: 3 2 712 454 6 442 86
+69169117: 1 2 492 14 91 17
+1312: 44 51 55 890 272
+168008743: 8 50 42 87 34 9
+487800: 48 7 19 72 48 75
+13370112: 8 5 49 9 81 6 724 9 4 1 7
+42823680: 5 1 6 9 9 5 96 34 32
+8791740: 1 62 807 3 54
+56457986: 60 9 6 32 9 49 568 221
+113219: 78 200 8 409 43
+54394: 8 99 89 90 5
+378625170008: 77 496 8 83 125 61 1 8
+278244129: 5 6 176 93 630 770 2 9
+558711270: 10 9 7 7 8 2 550 97 9 9
+119: 1 8 9 43 58
+4219093863: 1 4 3 5 609 98 31 63 1
+13341355: 42 910 954 14
+10052058: 904 699 63 9 34 3 6
+48462: 4 5 5 66 301
+75699471: 4 34 942 942 82 4 347
+4544506132: 5 3 7 5 247 1 5 9 9 1 1 32
+52896: 68 279 1 76 76 1 2
+258536924: 8 5 8 2 7 3 86 690 9 1 12
+288662: 5 26 2 75 5 3 172 41 2 3
+26390: 48 59 931 7 7
+102081: 324 693 2 36 1
+128487268: 38 7 83 6 39 81 97 1 4
+19224: 3 9 1 8 89
+81432540: 501 20 7 387 3
+738: 20 9 4 2 7 435
+29516544: 87 2 7 557 8 69
+1296424278: 6 666 6 31 857 54
+479149020: 5 6 987 261 62
+1883704: 9 638 8 8 41
+7480260: 4 8 7 534 9 102 2 7 8 18
+1475107: 29 37 30 745 7
+1693: 17 97 1 9 35
+896075: 792 1 862 5 2 53 9 8 6 5
+2470: 151 1 1 2 2 2 608 2 7 3 4
+45069234: 82 177 29 539 6
+241893540: 824 820 358 79 10 11
+191130028: 685 7 8 4 25 92 5 4 3 16
+8853318: 693 285 5 39 31 2 9
+18827664945: 4 9 1 45 8 6 4 9 82 757 5
+4116: 1 564 14 7 70
+176837684: 7 5 22 10 4 73 5 4 7 83 2
+1896818086: 12 931 5 409 5 2 4 1 6
+105489753097: 6 17 9 841 5 4 1 7 8 29
+40161623048: 352 63 98 3 55 4 7 2 4
+1588: 8 21 3 27 8 4
+557431350: 25 486 9 26 589 25 70
+344082613: 47 8 5 8 4 9 2 2 4 802 13
+54844287: 548 44 27 1 4
+2009988: 293 98 7 4 4
+1460: 9 5 3 9 7 9 4
+531060398227: 4 37 897 9 4 398 227
+370163550: 9 48 1 8 67 12 70 3 747
+607921609: 5 476 7 37 30 790 9
+142843: 2 27 80 33 12 271
+1491: 729 646 86 24 6
+710723510: 17 469 9 3 53 8 86 3 70
+101165: 37 495 19 6 79
+4068792: 3 7 432 8 3 13
+22305981: 9 3 348 4 1 5 3 2 65 2 89
+1969800068778: 500 201 196 687 78
+1968: 105 7 1 51 12
+60750717: 45 2 9 75 717
+57464640: 1 85 651 2 8 2 81 3 2 5 2
+200314094445: 4 8 7 5 7 66 8 1 880 8 9 5
+8486: 2 963 1 6 7 7 1 6 2 337 2
+313862603: 71 5 92 961 3
+13295: 3 257 9 50 5
+567600: 7 4 572 946
+68737952352: 318 23 1 2 6 9 2 8 3 144
+3564807348: 35 47 202 9 298 57 4
+689871030: 19 95 980 3 26 6 5
+94380: 1 9 71 5 66 2
+2781516: 6 5 603 20 61 492 386
+13274353131: 3 4 466 1 1 87 8 963 1 8
+1114: 838 95 19 90 72
+265690: 9 119 8 31 82
+4914768: 505 5 968 48 17
+20054848: 9 2 3 97 3 6 3 34 58 11 4
+25408: 773 8 4 2 670
+12692025489: 6 504 54 226 9 1 8 11
+290762983266: 7 1 8 7 38 1 6 998 14 9 6
+11062: 173 7 56 250 4 9 4 715
+2047569858: 12 5 91 17 21 81 2 9
+36882: 237 4 751 961 2 827 6
+604145841: 3 5 9 8 4 5 823 4 634 41
+3706712: 3 706 710
+1958107: 1 325 6 8 6 4 4 1 1 60 6 1
+310883145: 4 816 618 4 8 31 45
+86120982: 4 41 221 6 66 866 7 6
+2773830: 231 76 3 9 9 30
+75367563264: 6 83 2 6 8 6 76 9 8 7 1
+22134: 3 90 238
+7551233910: 839 9 163 70 910
+153182070: 50 2 1 7 6 84 30 7 5 9 31
+6210421: 7 763 8 2 1
+14047776281: 5 67 852 229 281
+2203652320: 807 8 63 602 1 9 7
+233435: 9 715 1 9 41 399 1 4 8 7
+1257131: 5 94 1 16 1 95 502 629
+26088: 10 8 6 466 953 9 48 9 2
+35581368: 5 9 75 912 6 62 438
+606056: 6 11 5 194 44
+1552572: 85 761 3 2 9 6 18 4
+253947: 3 2 627 81 12
+5051760736: 3 786 571 469 50 8
+358540: 9 64 306 28 394
+561644260: 5 61 1 4 3 6 5 4 247 11 2
+1778294250: 9 15 242 9 42 144 810
+7710: 8 2 753 10 4 16
+193140: 20 498 3 4 7 55 15 6
+502578: 9 84 900 63 6
+43946: 26 42 643 24 39 159
+6279695: 1 6 5 4 60 57 1 9 95 6 2 3
+2372052: 8 8 8 80 44 2 3 7 9 516
+55286: 610 308 47 4 57 8 45
+11313: 85 435 604 6 1 3
+1172701075: 8 842 21 461 9 25 7
+1797522636: 590 8 52 3 578 44 392
+971889: 5 235 71 26 30 9
+4481: 648 4 8 166 1 291 4 9
+33050: 4 46 661
+28350171951: 4 146 945 859 75 2 1
+20126581497: 17 9 491 229 494 3
+219611747: 9 421 966 60 549 758
+1240: 53 6 3 7 1
+1063335085: 7 505 96 3 6 7 975 1 8 5
+1055: 6 52 29 2 6 11
+7469925625: 5 38 2 1 7 59 6 86 20 5
+35653113: 3 5 653 11 3
+149744: 53 897 49 1 40 9 8 2 8
+93519: 1 894 233 7 16 9 39 2 9
+11332409040413: 7 8 418 7 502 4 90 413
+143916476: 2 497 3 57 961
+7467000: 8 14 900 388 300 19
+198360845: 6 121 119 56 3 41 98
+353309832209: 6 1 36 8 2 9 9 44 3 211
+128: 6 6 2 50 6
+50422922685: 340 92 73 61 362 605
+1044844: 3 7 4 4 844
+9193: 5 79 3 76 3
+30090: 14 16 3 131 8 259 77 9
+337279: 37 4 9 13 658 8
+168780: 28 9 6 17 64 4 3 4 87 5
+642: 77 6 8 7 2
+7672557939275: 25 643 5 76 88 34 7 5
+19552214: 702 29 2 8 9 480 374
+354663185: 7 9 3 325 6 3 574 6 3 2 5
+525: 4 7 460 54
+599351195625: 2 38 4 45 625 573 689
+1965880: 220 960 34 49
+714: 13 3 3 2 6
+3955502937502: 3 6 75 586 2 93 1 6 502
+2814600: 2 2 6 14 4 83 23 20 74 1
+5382626: 5 887 8 9 771 26
+2985: 42 70 45
+114040: 86 805 270 99 90 640
+9758700: 3 11 8 35 2 47 5 7 150
+100502: 56 9 7 82 8 4 1 9 9 305
+414969404544: 4 317 8 6 41 9 7 9 64 96
+1842483: 1 59 3 3 2 9 2 7 1 60 9 3
+21282606: 4 21 883 518 942
+127405: 1 447 285 9 1
+142043: 2 84 8 804 139 400
+28834136: 47 5 607 1 5 1 10 148 6
+2624860: 28 4 2 9 9 2 217 85 45 7
+17295642442: 994 174 406 15 3 42
+446792: 76 1 5 5 58 19 2
+35078400: 29 14 25 8 9 6 8
+35933488: 8 927 948 537 218 1 8
+2054: 2 54 1 35 59
+5752100560: 729 935 27 394 20
+1460: 8 78 3 36 2 1 794
+2092: 92 2 6 482 2
+132844416: 3 73 8 16 8 5 53 5 6 914
+1040: 2 1 8 13 65 5
+3776340861: 5 6 43 4 807 9 30 3 327
+211646: 737 7 1 2 41 45
+2478488900: 912 677 9 320 6 8 446
+6346890: 79 13 64 549 21 9 3
+10743769823: 2 9 9 366 2 9 213 5 7 4 3
+384744: 1 7 45 9 1 53 8 9 1 2 3 92
+11120158342: 94 2 3 863 118 2
+489775464841: 754 909 829 862 9 4
+51328938: 7 8 9 4 3 172 73 8 9 1
+3792391: 50 8 89 5 11 141 193 3
+1677592: 79 87 20 6 9 16 5 2 56
+471: 9 14 8 7 433
+1107101: 3 367 7 198 5 7 1 98 4 9
+47200: 2 9 3 17 944
+3348321304: 5 813 9 1 520 64 7 4 4 9
+1739519: 66 19 428 57 519
+22440: 8 4 9 54 4 9 165 846 17
+821576: 9 31 6 5 79 1 2 8 9 7 5 56
+2668212268: 193 9 6 929 17 9 2 9 70
+107258248: 5 39 55 824 8
+16886076: 86 798 850 2 10 9 27 6
+15150915: 23 77 8 9 89 97 15
+5495112: 4 9 3 27 652 3 329 8 8
+3731250172: 18 923 206 765 957
+712: 7 82 7 70 61
+1690608385: 950 8 59 36 754 933 5
+211704: 4 73 5 5 29 4
+13350938: 9 13 690 26 878 70
+1078: 4 75 3 58 938
+63265042924: 8 6 92 1 1 530 8 2 924
+133796: 88 12 6 1 31 2 1 991 2
+1568: 47 9 365 578 202
+8272201: 32 68 5 887 703
+1577492: 46 517 38 1 28
+196963074: 84 5 1 63 47 6 29 5 198
+886296: 87 7 35 894 6
+31327600: 175 117 765 2 847 3
+253681: 8 1 40 23 775 45 3 7 7 2
+17514480: 43 377 18 79 31 60
+910107: 912 319 400 558 1 9
+161: 3 3 4 2 83 9 21
+40413945600: 405 172 56 280 37
+3789: 87 2 35 650 24
+27022: 4 4 32 5 600 22
+197568: 257 9 3 1 36 84
+328307113: 377 3 6 45 87
+151439: 95 56 423 16
+259661768400: 920 49 2 33 57 6 33 48
+423: 1 2 5 8 4 6 1 4 62 7 35 3
+46979865: 446 9 8 7 209 4 5
+645844904: 913 3 32 7 921 349 9 8
+2626745581: 7 4 4 96 770 9 5 581
+563611272336: 84 52 5 5 4 6 98 126 6 3
+2816515701: 4 305 5 13 93 8 5 7 6
+7008: 3 24 43 7 6 1
+3843804: 114 9 6 880 67 3 4 680
+11489089: 29 882 67 32 5 14 59
+532035739: 604 586 2 440 59
+400471397473: 6 674 52 1 3 2 911 6 4 1
+125805007: 8 4 5 2 3 2 9 7 51 5 60 7
+3731005: 37 30 952 4 49
+26168970: 873 7 4 1 704 26 7 33 6
+18249174: 249 25 74 86 9
+14153474251: 6 471 6 3 9 6 9 6 9 450 1
+1685466: 4 921 82 678 466
+50708: 8 546 191 67 793
+1789646: 7 4 2 52 1 6 2 910 787 8
+113086575: 136 85 1 323 95 75 21
+763: 60 3 3 157
+756109819: 1 2 7 90 258 9 1 4 621 9
+99331: 610 597 94 38 9 2 437
+5591282: 31 5 662 9 2 4 84
+68420: 76 7 2 1 4 3 5 5 517 8 8 4
+120380: 4 9 6 553 924 8
+663053160: 4 2 6 14 5 4 9 5 2 6 365 2
+26825461: 609 28 7 1 9 109 6 52 9
+41360: 2 19 3 2 3 899 6
+20393: 1 49 4 3 93
+2084013: 781 26 3 9 257
+1667257110288: 3 69 8 28 41 204 77 7
+430950: 14 1 8 8 18 7 4 6 7 2 6 5
+52577: 6 28 9 295 356 6
+10006634: 7 1 25 5 6 634
+262290534: 82 9 8 3 6 95 3 18 4 92 6
+67866: 31 650 73 9 6
+1575: 9 58 1 3 6
+59124: 8 2 9 2 32 3 845 1 23 4 4
+1013226: 3 588 5 3 94
+223242318: 7 8 55 5 16 22 2 423 18
+1156716300: 1 201 5 191 828 299 1
+304170059558: 452 46 8 950 6 59 558
+16721: 4 68 9 4 7 1 60 2 2 7 3 2
+3270361: 8 1 110 8 638 2 7 4 85
+810506452: 66 458 4 349 554 4 6 2
+67695107: 955 7 8 7 2 268 87 30 7
+1799821: 2 9 52 4 4 1 20 11
+4416: 43 2 6 3 6
+10554182: 9 2 4 84 5 8 80 58 6 38
+139: 8 6 53
+175460066367: 18 8 66 6 738 930 27
+2080368820: 3 32 1 3 9 3 1 90 99 8 28
+217175: 214 2 605 570
+370333248: 9 80 559 33 928 586
+47: 6 6 35
+2499: 52 6 2 2 81 2 1 9
+398476: 4 108 97
+277326: 13 795 462 3 5 31 7
+444588700: 444 17 41 86 41 59
+140: 9 52 1 72 7
+151004081: 4 47 3 99 341 9 65
+117335040: 55 6 1 68 9 863 1 384 8
+5381424859: 2 989 1 4 2 8 18 7 6 9 8
+972371: 11 81 60 176 851
+75170: 6 3 683 71 28 471
+939123289: 51 8 43 158 93 36 289
+1129468656: 975 25 47 492 94
+59856: 1 7 539 2 19 57 222 43
+48186761: 7 894 77 99 62
+507835: 50 5 9 9 9 9 1 5 39 1
+95273700: 8 574 52 16 705 29
+20660493280: 7 529 32 49 70 560
+6624696: 8 6 507 5 1 8 9 85 7 7 34
+15010074378: 8 7 56 4 8 4 3 5 3 354 6 3
+678375368: 700 20 4 597 968
+29457249523: 2 9 12 6 4 3 2 72 495 23
+124197303: 114 675 807 2 3
+952: 5 3 7 91 31 6 749 7 1 5 7
+105460: 8 15 88 950 10
+2474: 87 9 99 995 597
+82448: 12 4 9 58 1 34 1 1 3 2 3 4
+200852169: 83 216 5 1 22 4 3 4 3 7
+15804: 644 95 836 7 47
+51172: 6 80 9 1 9 487 9 8 4 9 4 3
+18716470110: 7 7 92 4 9 9 5 3 299 30
+1104115320: 7 51 5 55 2 11 396 70
+23730820: 4 6 7 468 96 2 23 450 3
+1001067516: 2 6 1 1 22 218 2 1 892 9
+43248548: 4 324 1 7 2 9 69 373 6 1
+15903155187792: 90 16 503 18 73 2 92 6
+8504979: 4 83 2 5 8 7 7 64 73 74
+363303: 404 580 41 23 9
+227343: 7 77 268 9 481 1 90 3 3
+326565: 815 40 9 468 3 85
+7695: 2 2 85 6 81
+39343: 80 49 2 72 69
+61878: 86 58 9 295 138 54
+1863313: 4 41 68 8 7 314
+81640800: 1 69 3 493 800
+159012: 37 80 6 2 21
+9700215: 8 5 1 446 8 2 2 61 105 1
+58789: 202 628 35 6 3 2 1 671
+3072485: 6 45 337 94 487 9 2
+256800: 2 8 8 6 535
+283078917: 5 7 733 38 30 39 3 309
+34675: 47 8 3 4 5 995 4 5 4 175
+15603: 4 14 832 364 263
+3938405130: 1 8 715 46 1 3 2 8 5 6 51
+1769660661: 7 2 5 2 2 3 103 35 7 426
+1609545534: 32 2 83 7 55 37 7 5 89 6
+77820294491: 6 63 2 917 1 64 17 74
+11220481: 3 33 3 3 83 1 3 6 640 1
+2658459: 771 1 9 71 8 2 5 59 1 8 3
+1599441406: 416 6 89 8 5 900 7 8 91
+156508013: 9 3 92 6 57 2 440 8 1 1
+8346: 5 8 182 686 380
+231984743: 9 72 888 7 38 9 7 607 3
+21601: 37 6 2 132 7 96 1
+724: 27 317 27 274 79
+55994878860: 38 9 34 799 5 9 2 4 9 4
+4631: 1 40 16 7 39
+712350654: 857 68 17 18 453
+229674: 1 723 402 36 58 3
+2100: 843 740 55 76 386
+921150275: 51 64 890 9 275
+734929386: 632 380 4 9 90 34 6
+2669199: 97 5 7 95 922 7 9 6 8 6 1
+1500039: 2 7 331 3 6 2 3 8 1 9 27 9
+72048: 240 650 9 49 76
+1660302: 113 25 5 850 22 76 4 2
+511746807: 47 9 809 9 465 807
+38019125: 369 68 87 11 9 6
+4527: 6 6 9 45 293 5 2 4 2 691
+242568: 8 24 6 341 64 8
+427: 3 81 4 91 1
+23195120: 22 198 655 342 120
+360: 9 6 4 2 3
+6853: 79 6 78 216 7
+35758: 336 21 1 43 8 6 1
+2179618: 7 70 70 4 680 1 98
+9606: 86 4 2 3 943
+26749464: 1 5 433 5 717 98 84
+776037573: 8 8 894 9 577 6 621 9
+799293: 99 8 76 2 4 4 6 1 3 5 31 3
+2691671: 1 7 6 2 1 4 1 12 65 668 3
+1544: 898 24 1 496 99 27
+68191364: 42 990 2 2 82
+524438312: 524 4 382 42 70
+8831455: 5 2 7 29 5 435 2 76 879
+434271927: 649 708 8 725 73 4 7
+88569642727: 885 69 642 7 27
+663: 204 17 3
+38449: 2 65 6 1 1 8 1 2 56 8 369
+392709: 28 177 117 2 50 5 7 3 9
+58033879: 8 725 4 9 7 8 16 570 1 9
+94154: 150 22 5 86 358
+43361102577534: 7 5 59 634 69 749 966
+2026946: 8 257 6 983
+5551744: 3 9 9 9 79 661 51 7 8 4
+467134789: 819 596 957 92 29
+1434: 1 5 1 6 8 520
+1660075: 217 34 83 710 8 7 38 1
+104704026560: 2 8 7 4 6 5 9 429 5 20 7 4
+3362348024: 7 4 601 27 3 897 5 7
+967272990: 17 30 354 9 559 9 64
+695308: 69 436 8 86 854
+617664: 4 19 879 684 696
+280208148: 365 766 618 143 4
+11358272: 74 3 5 44 43 11 29 63 2
+102: 25 2 8 67 1
+148752720571: 5 693 265 6 10 9 19 3 1
+9326675237: 4 658 325 28 56 774 5
+63112912358: 63 11 29 123 6 1
+689052595: 202 96 7 7 485
+6261: 8 4 31 16 93 8 13
+1143244033: 857 230 95 9 29 2 1
+4077224042: 5 343 675 763 17
+148967182: 91 464 855 38 91
+13013: 261 7 9 23 7
+151402: 2 7 65 119 8 8 484 2 2
+1162841: 4 653 7 444 5
+122954: 931 42 59 1 119 25
+8802293760: 8 6 5 2 7 248 208 5 72 6
+882283627: 2 60 762 28 29 68 659
+119320851948: 4 6 9 3 2 736 8 3 5 65 8 6
+363560: 599 2 9 551 61
+79156980000: 12 75 3 35 8 5 487 43
+2016471: 8 80 2 5 9 9 1 5 7 66 90
+541898: 7 906 63 68 6
+8691: 44 4 41 2 4
+57859465: 582 9 60 978 6 5 974
+969507840: 8 5 3 520 71 4 254 7 3 1
+111331: 14 9 2 8 4 3 1 40 188 3
+79296: 9 72 2 52 62 4 2 48 7
+99752561604: 25 783 42 2 4 32 2 482
+260196: 85 8 466 6 2 104 53 9
+54308747928: 84 978 7 115 1 6 958
+177610113: 5 12 4 679 5 23 457 9
+291015504: 409 342 4 702 138
+111029044: 7 658 506 16 57 7 844
+4431074491353: 263 96 287 7 27 650
+61459200: 3 3 3 37 4 805 2 30 80 9
+4938: 2 6 7 7 7 586 74 4 130 6
+724927: 1 687 9 1 13 80 47
+176219199: 8 533 928 1 351
+7061236841: 52 30 20 299 859
+1680930: 56 9 2 120 1 799 8 2 95
+22230091458: 5 780 57 91 4 61
+618962: 618 8 7 9 1
+979087974: 896 52 407 2 5 53 393
+1076124: 3 42 7 761 124
+39804061: 3 6 7 9 3 2 3 685 535 6 1
+617371560: 9 2 6 77 1 83 4 26 9 10 1
+59292627728: 244 243 62 77 28
+60679755965: 81 7 1 3 19 57 687 65
+385718461: 2 6 873 908 8 3 3 3 2 24
+70068614: 5 2 19 383 178 887 7 7
+81627: 812 1 8 236 87 45 41
+61252920: 7 396 200 229 90
+122349515906: 536 4 1 3 95 66 704 49
+236503863: 546 954 305 373 131
+3351192: 2 65 1 640 75 9 78
+5108625: 3 2 2 5 2 165 313 1 7 8 6
+178031530140: 14 4 9 269 7 1 710 822
+6883328: 6 94 1 3 113 7 9 4 1 4 4
+4007370310: 15 90 8 9 7 357 89 830
+588964251601: 7 5 347 2 47 20 963 5 1
+270755048: 6 42 1 631 212 57 8 8
+1332121: 8 9 8 4 2 3 6 800 8 3 3 88
+5591335: 371 3 5 2 6 7 5
+14219565360: 5 993 213 3 8 754 91 5
+5861562162: 1 8 9 4 8 6 6 4 451 53 6 2
+1433385: 874 74 21 72 9
+15707744640: 568 36 6 5 59 434
+1690128: 66 2 4 97 33
+398948632: 65 4 61 85 5 3 7 72
+10387019376: 63 1 245 7 6 77 42 328
+4179604: 5 6 422 1 20 40 45 4
+207295515460: 7 423 3 645 7 3 9 6 1 1 9
+1496054: 80 69 48 12 54
+117174039: 60 5 5 4 331 59 2 37
+120561: 443 34 8 3 62
+1093662: 1 413 9 1 86
+72832203: 49 3 4 4 791 3 5 22 3 9 9
+9172450: 520 94 7 264 49 175
+5092: 9 52 9 6 5 869
+205017: 859 5 67 47 3
+502964: 5 465 2 92
+982872: 55 31 30 94 721 1 6
+18842130: 997 20 24 362 50 30
+933: 11 824 8 3 87
+100362657: 9 3 2 6 375 988 3 3 8 4 1
+125631197: 7 8 1 2 92 6 9 72 1 563 2
+16965: 936 759 2 5 8
+63221509696: 76 214 5 4 340 89 8 8
+175095120: 66 4 1 5 6 10 184 6 3 8 5
+5948579768: 69 5 3 2 6 5 44 93 3 8 4 3
+612455: 6 4 1 638 251 2 8 3 1 9 6
+35828415: 6 4 1 7 9 779 2 22 5 4 5 7
+1423570: 77 835 65 4 6 1 849
+139702935: 55 8 4 5 5 6 4 90 2 935
+521072: 148 8 55 9 5 8
+42845205: 9 110 6 54 47 5
+155790: 8 558 97 18 1
+347911604818: 91 6 354 22 44 2 9 9 8 8
+196579: 1 9 15 15 129 2 19 499
+178336116: 5 53 16 4 522 6 6
+211784: 352 6 6 22 4
+357611951: 9 19 8 1 613 463 7 3 3 5
+2856: 6 31 29 54 4
+3115653: 8 404 964 5
+139573401: 1 34 1 142 33 851 891
+2731: 3 107 8 1 8 8 80 3
+1635930605522: 8 5 9 6 8 137 7 94 604 2
+2517747584: 8 1 3 715 424 5 755 1 9
+13551: 8 9 6 589 4
+8640: 9 60 9
+246434062: 6 18 632 93 960 87 62
+844073: 298 57 899 67 7 47
+14942463139: 169 883 197 631 39
+70584888: 8 8 23 8 888
+66176064187: 882 7 833 5 9 17 2 7 5 3
+54955: 54 95 5
+1683752: 417 2 9 562 7
+31395181: 94 497 1 1 672 9 4
+418453: 9 7 19 1 1 349 2
+737204: 8 1 4 189 9 3 86 4 5 5 1 3

2024/go/day08/day08.go

@@ -0,0 +1,168 @@
+package day08
+
+import (
+	"adventofcode2024/utils/grid2d"
+	"adventofcode2024/utils/inputs"
+	"fmt"
+)
+
+type loc struct {
+	x int
+	y int
+}
+
+type pt struct {
+	display   rune
+	antinodes int
+	paired    map[loc]pt
+	visited   map[rune]bool
+}
+
+func Part1(input string) int {
+	grid := inputs.ToGrid2D(input, "\n", "", pt{display: '.'}, func(c string) pt { return pt{display: rune(c[0]), paired: make(map[loc]pt), visited: make(map[rune]bool)} })
+	for x1 := 0; x1 < grid.SizeX(); x1++ {
+		for y1 := 0; y1 < grid.SizeY(); y1++ {
+			pt1 := grid.Get(x1, y1)
+			if pt1.display != '.' {
+				for x2 := 0; x2 < grid.SizeX(); x2++ {
+					for y2 := 0; y2 < grid.SizeY(); y2++ {
+						pt2 := grid.Get(x2, y2)
+						if x1 != x2 && y1 != y2 && pt1.display == pt2.display && !isPaired(x1, y1, pt1, pt2) {
+							pt1.paired[loc{x: x2, y: y2}] = pt2
+							pt2.paired[loc{x: x1, y: y1}] = pt1
+						}
+					}
+				}
+			}
+		}
+	}
+	for x := 0; x < grid.SizeX(); x++ {
+		for y := 0; y < grid.SizeY(); y++ {
+			pt1 := grid.Get(x, y)
+			if pt1.display != '.' {
+				for ploc := range pt1.paired {
+					addAntiNodes(x, y, ploc.x, ploc.y, grid)
+				}
+			}
+		}
+	}
+	antinodes := 0
+	for x := 0; x < grid.SizeX(); x++ {
+		for y := 0; y < grid.SizeY(); y++ {
+			pt := grid.Get(x, y)
+			if pt.antinodes > 0 {
+				antinodes++
+			}
+		}
+	}
+	return antinodes
+}
+
+func Part2(input string) int {
+	grid := inputs.ToGrid2D(input, "\n", "", pt{display: '.'}, func(c string) pt { return pt{display: rune(c[0]), paired: make(map[loc]pt), visited: make(map[rune]bool)}})
+	for x1 := 0; x1 < grid.SizeX(); x1++ {
+		for y1 := 0; y1 < grid.SizeY(); y1++ {
+			pt1 := grid.Get(x1, y1)
+			if pt1.display != '.' {
+				for x2 := 0; x2 < grid.SizeX(); x2++ {
+					for y2 := 0; y2 < grid.SizeY(); y2++ {
+						pt2 := grid.Get(x2, y2)
+						if x1 != x2 && y1 != y2 && pt1.display == pt2.display && !isPaired(x1, y1, pt1, pt2) {
+							pt1.paired[loc{x: x2, y: y2}] = pt2
+							pt2.paired[loc{x: x1, y: y1}] = pt1
+							pt1.antinodes++
+							pt2.antinodes++
+							grid.Set(x1, y1, pt1)
+							grid.Set(x2, y2, pt2)
+						}
+					}
+				}
+			}
+		}
+	}
+	for x := 0; x < grid.SizeX(); x++ {
+		for y := 0; y < grid.SizeY(); y++ {
+			pt1 := grid.Get(x, y)
+			if pt1.display != '.' {
+				for ploc := range pt1.paired {
+					addAntiNodes_p2(pt1.display, x, y, ploc.x, ploc.y, grid)
+				}
+			}
+		}
+	}
+	antinodes := 0
+	fmt.Printf("%v\n", grid.StringWithFormatter(formatter))
+	for x := 0; x < grid.SizeX(); x++ {
+		for y := 0; y < grid.SizeY(); y++ {
+			pt := grid.Get(x, y)
+			if pt.antinodes > 0 {
+				antinodes++
+			} else {
+				if pt.display != '.' { antinodes++ }
+			}
+		}
+	}
+	return antinodes
+}
+
+func formatter(p pt, x int, y int) string {
+	if p.antinodes > 0 { 
+		return "#"
+	}
+	return "."
+}
+
+func isPaired(x int, y int, p1 pt, pt2 pt) bool {
+	return p1.paired[loc{x: x, y: y}].display == pt2.display
+}
+
+func addAntiNodes(x1 int, y1 int, x2 int, y2 int, grid *grid2d.Grid[pt]) {
+	px1, py1, px2, py2 := offsetPoints(x1, y1, x2, y2)
+
+	if px1 < 0 || px1 >= grid.SizeX() || py1 < 0 || py1 >= grid.SizeY() {
+		return
+	}
+	pt1 := grid.Get(px1, py1)
+	pt1.antinodes++
+	grid.Set(px1, py1, pt1)
+	if px2 < 0 || px2 >= grid.SizeX() || py2 < 0 || py2 >= grid.SizeY() {
+		return
+	}
+	pt2 := grid.Get(px2, py2)
+	pt2.antinodes++
+	grid.Set(px2, py2, pt2)
+}
+
+func addAntiNodes_p2(frequency rune, x1 int, y1 int, x2 int, y2 int, grid *grid2d.Grid[pt]) {
+	px1, py1, px2, py2 := offsetPoints(x1, y1, x2, y2)
+	if !(px1 < 0 || px1 >= grid.SizeX() || py1 < 0 || py1 >= grid.SizeY()) {
+		pt1 := grid.Get(px1, py1)
+		if !pt1.visited[frequency] {
+			pt1.antinodes++
+			pt1.visited[frequency] = true
+			grid.Set(px1, py1, pt1)
+			addAntiNodes_p2(frequency, x1, y1, px1, py1, grid)
+		}
+	}
+	if !(px2 < 0 || px2 >= grid.SizeX() || py2 < 0 || py2 >= grid.SizeY()) {
+		pt2 := grid.Get(px2, py2)
+		if !pt2.visited[frequency] {
+			pt2.antinodes++
+			pt2.visited[frequency] = true
+			grid.Set(px2, py2, pt2)
+			addAntiNodes_p2(frequency, x2, y2, px2, py2, grid)
+		}
+	}
+}
+
+// Function to calculate two points symmetrically placed above and below the line
+func offsetPoints(x1, y1, x2, y2 int) (int, int, int, int) {
+	dx := x1 - x2
+	dy := y1 - y2
+
+	p1x := x1 + dx
+	p1y := y1 + dy
+	p2x := x2 - dx
+	p2y := y2 - dy
+	return p1x, p1y, p2x, p2y
+}

2024/go/day08/day08_test.go

@@ -0,0 +1,39 @@
+package day08
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(`............
+........0...
+.....0......
+.......0....
+....0.......
+......A.....
+............
+............
+........A...
+.........A..
+............
+............`)
+	require.Equal(t, 14, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(`............
+........0...
+.....0......
+.......0....
+....0.......
+......A.....
+............
+............
+........A...
+.........A..
+............
+............`)
+	require.Equal(t, 34, r)
+}

2024/go/day08/input.txt

@@ -0,0 +1,50 @@
+.....y..........................p................r
+........I.........................................
+......................4.s.........................
+..........4.......................................
+....y.............................................
+......................................p.........r.
+..........0..s......N..................1.....p....
+..y........4.......................p..............
+...............0..................................
+..............0....t....N....h....................
+.............N....................................
+......j...................s............H...l..O...
+..........q.................H................O....
+..f...e.qj.....y...0..............................
+...........t..........................k..Q..r.....
+.........6................Q..s...x......W.........
+....2..b...e....t..4.........c.....xW.j...........
+...e....................w................1.....O..
+..e..j..5...........................c.............
+.........B..2...............MK................H...
+...2......b...g..X...q..........h...............O.
+...q...2..........m....k...i...............QV.x...
+...................i.........W.k.............HQ...
+........b...X...............D..........c...N......
+................................l..........h.....I
+.m...........g......l.......c.............3......V
+....X.......m........g...V.K...7......F.d.........
+.........b.X...U..........................C.......
+.....................l..............o.1....C......
+............u.............K..............3...d....
+......................i.T....f................V...
+..............................1.k.................
+.B.....E......9..m....K..5.M......................
+...P...............M...95....o..i........I........
+...............................S......3......wI...
+.....EP...........9........5..T.R.................
+.P..........v..9......f.............R.Co..w3......
+..........h...SG..v.E...7..f.T....................
+..........6..........L.................Y.......d..
+..........B...............U........D..............
+....B................U.....8..M....n...J..........
+.........................L................Fw......
+....L6E.P.................7.UG....J.....Y.D.......
+........t........v...SJ........n..d...............
+......................8v.....uG...................
+..................L.....n.........................
+...............T..............n......D............
+..............o.........8................J.Y.R....
+..................S...............u....F.......R..
+........6..............u.....7.8..........Y..F....

2024/go/day09/day09.go

@@ -0,0 +1,117 @@
+package day09
+
+import (
+	"adventofcode2024/utils"
+	"fmt"
+)
+
+func Part1(input string) int {
+	disk := []int{}
+	file_id := 0
+	for i := 0; i <= len(input); i++ {
+		for x := 0; x < utils.MustAtoi(string(input[i])); x++ {
+			disk = append(disk, file_id)
+		}
+		i++
+		if i < len(input) {
+			for x := 0; x < utils.MustAtoi(string(input[i])); x++ {
+				disk = append(disk, -1)
+			}
+		}
+		file_id++
+	}
+	
+	printDisk(disk)
+
+	for i:=len(disk)-1;i>0;i--{
+		if disk[i] != -1 {
+			id := disk[i]
+			disk[i] = -1
+			for j:=0;j<=len(disk);j++ {
+				if disk[j] == -1 {
+					disk[j] = id
+					break
+				}
+			}
+		}
+	}
+	printDisk(disk)
+
+	checksum := 0
+	for i:=0;i<len(disk);i++ {
+		if disk[i] != -1 {
+			checksum += i * disk[i]
+		}
+	}
+	return checksum
+}
+
+func Part2(input string) int {
+	disk := []int{}
+	file_id := 0
+	for i := 0; i <= len(input); i++ {
+		for x := 0; x < utils.MustAtoi(string(input[i])); x++ {
+			disk = append(disk, file_id)
+		}
+		i++
+		if i < len(input) {
+			for x := 0; x < utils.MustAtoi(string(input[i])); x++ {
+				disk = append(disk, -1)
+			}
+		}
+		file_id++
+	}
+	
+	printDisk(disk)
+
+	for i:=len(disk)-1;i>0;i--{
+		size := 0
+		if disk[i] != -1 {
+			id := disk[i]
+			for {
+				if i-size > 0 && disk[i-size] == id {
+					size++
+				} else {
+					break
+				}
+			}
+			free := 0
+			j := 0
+			found := false
+			for ;j<i && free < size;j++{
+				if disk[j] != -1 { 
+					free = 0
+					continue 
+				}
+				free++
+				if free == size { found = true }
+			}
+			if found {
+				for k:=0;k<size;k++ {
+					disk[i-k] = -1
+					disk[j-size+k] = id
+				}
+//				printDisk(disk)
+			}
+			i -= (size -1)
+			
+		}
+	}
+	printDisk(disk)
+
+	checksum := 0
+	for i:=0;i<len(disk);i++ {
+		if disk[i] != -1 {
+			checksum += i * disk[i]
+		}
+	}
+	return checksum}
+
+func printDisk(disk []int) {
+	for _, x := range disk {
+		if x == -1 {fmt.Print(".")} else {
+			fmt.Printf("%d", x)
+		}
+	}
+	fmt.Print("\n")
+}

2024/go/day09/day09_test.go

@@ -0,0 +1,17 @@
+package day09
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1("2333133121414131402")
+	require.Equal(t,1928, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2("2333133121414131402")
+	require.Equal(t, 2858, r)
+}

2024/go/go.mod

@@ -13,6 +13,6 @@ require github.com/spf13/pflag v1.0.5 // indirect
 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 // indirect
+	github.com/stretchr/testify v1.10.0 // direct
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )