feat: add day 6 2024

Reviewed-on: #23

.gitea/workflows/test.yml

@@ -28,6 +28,6 @@ jobs:
         go-version: 1.21.3
 
     - name: Test
-      run: go test --race -cover ./...
+      run: go test -timeout 240s -race -cover ./...
 
     - run: echo "🍏 This job's status is ${{ job.status }}."

README.md.sig

@@ -0,0 +1,6 @@
+-----BEGIN SSH SIGNATURE-----
+U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgZ+OuJYdd3UiUbyBuO1RlsQR20a
+Qm5mKneuMxRjGo3zkAAAAEZmlsZQAAAAAAAAAGc2hhNTEyAAAAUwAAAAtzc2gtZWQyNTUx
+OQAAAED8T4C6WILXYZ1KxqDIlVhlrAEjr1Vc+tn8ypcVM3bN7iOexVvuUuvm90nr8eEwKU
+acrdDxmq2S+oysQbK+pMUE
+-----END SSH SIGNATURE-----

aoc2023/day01/main_test.go

@@ -30,7 +30,6 @@ func TestExample1(t *testing.T) {
 	is.Equal(result.sum, 142)
 }
 
-
 func TestExample2(t *testing.T) {
 	is := is.New(t)
 	scan := bufio.NewScanner(bytes.NewReader(example2))

aoc2023/day14/main.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	_ "embed"
 	"fmt"
+	"slices"
 	"strings"
 
 	aoc "go.sour.is/advent-of-code"
@@ -62,7 +63,7 @@ func run(scan *bufio.Scanner) (*result, error) {
 					func(i int, v int, counts [3]int) [3]int {
 						counts[v]++
 						return counts
-					}, [3]int{}, maps.Values(memo)...)
+					}, [3]int{}, slices.Values(maps.Values(memo)))
 
 				// fmt.Println(i, counts)
 				i = 1_000_000_000 - (1_000_000_000-counts[0]-counts[1])%counts[2]

aoc2023/day14/main_test.go

@@ -36,11 +36,10 @@ func TestSolution(t *testing.T) {
 	is.NoErr(err)
 
 	t.Log(result)
- is.True(result.valuePT2 < 87286) // first submission
- is.True(result.valuePT2 < 87292) // second submission
- is.True(result.valuePT2 < 87287) // third submission
+	is.True(result.valuePT2 < 87286) // first submission
+	is.True(result.valuePT2 < 87292) // second submission
+	is.True(result.valuePT2 < 87287) // third submission
 
 	is.Equal(result.valuePT1, 110407)
 	is.Equal(result.valuePT2, 87273)
 }
-

aoc2023/day15/main.go

@@ -32,14 +32,14 @@ func run(scan *bufio.Scanner) (*result, error) {
 		r.valuePT1 = aoc.Reduce(func(i int, t string, sum int) int {
 			sum += hash(t)
 			return sum
-		}, 0, ops...)
+		}, 0, slices.Values(ops))
 	}
 
 	var boxen boxes
 
 	boxen = aoc.Reduce(func(i int, op string, b boxes) boxes {
 		return b.Op(op)
-	}, boxen, ops...)
+	}, boxen, slices.Values(ops))
 
 	r.valuePT2 = boxen.Sum()
 

aoc2023/day16/main.go

@@ -32,15 +32,15 @@ func run(scan *bufio.Scanner) (*result, error) {
 
 	options := make([]int, 2*(rows+cols)+2)
 	i := 0
-	for j:=0; j<=rows-1; j++ {
+	for j := 0; j <= rows-1; j++ {
 		options[i+0] = runCycle(m, ray{[2]int{j, -1}, RT})
 		options[i+1] = runCycle(m, ray{[2]int{j, cols}, LF})
-		i+=2
+		i += 2
 	}
-	for j:=0; j<=cols-1; j++ {
+	for j := 0; j <= cols-1; j++ {
 		options[i+0] = runCycle(m, ray{[2]int{-1, j}, DN})
 		options[i+1] = runCycle(m, ray{[2]int{rows, j}, UP})
-		i+=2
+		i += 2
 	}
 
 	// fmt.Println(options)
@@ -96,7 +96,6 @@ func (m *Map) Get(p [2]int) rune {
 	return (*m)[p[0]][p[1]]
 }
 
-
 func runCycle(m Map, r ray) int {
 	current := r
 
@@ -186,4 +185,4 @@ func runCycle(m Map, r ray) int {
 	// }
 
 	return len(energized)
-}
+}

aoc2023/day16/main_test.go

@@ -47,4 +47,4 @@ func TestStack(t *testing.T) {
 	s := stack[int]{}
 	s.Push(5)
 	is.Equal(s.Pop(), 5)
-}
+}

aoc2023/day17/main.go

@@ -0,0 +1,225 @@
+package main
+
+import (
+	"bufio"
+	_ "embed"
+	"fmt"
+
+	aoc "go.sour.is/advent-of-code"
+)
+
+var log = aoc.Log
+
+func main() { aoc.MustResult(aoc.Runner(run)) }
+
+type result struct {
+	valuePT1 int
+	valuePT2 int
+}
+
+func (r result) String() string { return fmt.Sprintf("%#v", r) }
+
+func run(scan *bufio.Scanner) (*result, error) {
+	var m aoc.Map[int16, rune]
+
+	for scan.Scan() {
+		text := scan.Text()
+		m = append(m, []rune(text))
+	}
+	log("start day 17")
+
+	result := result{}
+	result.valuePT1 = search(m, 1, 3, seenFn)
+	log("result from part 1 = ", result.valuePT1)
+
+	result.valuePT2 = search(m, 4, 10, nil)
+	log("result from part 2 = ", result.valuePT2)
+
+	return &result, nil
+}
+
+type Point = aoc.Point[int16]
+type Map = aoc.Map[int16, rune]
+
+// rotate for changing direction
+type rotate int8
+
+const (
+	CW  rotate = 1
+	CCW rotate = -1
+)
+
+// diretion of path steps
+type direction int8
+
+var (
+	U = Point{-1, 0}
+	R = Point{0, 1}
+	D = Point{1, 0}
+	L = Point{0, -1}
+)
+
+var directions = []Point{U, R, D, L}
+
+var directionIDX = func() map[Point]direction {
+	m := make(map[Point]direction, len(directions))
+	for k, v := range directions {
+		m[v] = direction(k)
+	}
+	return m
+}()
+
+// position on the map
+type position struct {
+	loc       Point
+	direction Point
+	steps     int8
+}
+
+func (p position) step() position {
+	return position{p.loc.Add(p.direction), p.direction, p.steps + 1}
+}
+func (p position) rotateAndStep(towards rotate) position {
+	d := directions[(int8(directionIDX[p.direction])+int8(towards)+4)%4]
+	return position{p.loc.Add(d), d, 1}
+}
+
+// implements FindPath graph interface
+type graph struct {
+	min, max int8
+	m        Map
+	target   Point
+	reads    int
+	seenFn   func(a position) position
+}
+
+// Neighbors returns valid steps from given position. if at target returns none.
+func (g *graph) Neighbors(current position) []position {
+	var nbs []position
+
+	if current.steps == 0 {
+		return []position{
+			{R, R, 1},
+			{D, D, 1},
+		}
+	}
+
+	if current.loc == g.target {
+		return nil
+	}
+
+	if left := current.rotateAndStep(CCW); current.steps >= g.min && g.m.Valid(left.loc) {
+		nbs = append(nbs, left)
+	}
+
+	if right := current.rotateAndStep(CW); current.steps >= g.min && g.m.Valid(right.loc) {
+		nbs = append(nbs, right)
+	}
+
+	if forward := current.step(); current.steps < g.max && g.m.Valid(forward.loc) {
+		nbs = append(nbs, forward)
+	}
+
+	return nbs
+}
+
+// Cost calculates heat cost to neighbor from map
+func (g *graph) Cost(a, b position) int16 {
+	g.reads++
+	_, r, _ := g.m.Get(b.loc)
+	return int16(r - '0')
+}
+
+// Potential calculates distance to target
+// func (g *graph) Potential(a position) int16 {
+// 	return aoc.ManhattanDistance(a.loc, g.target)
+// }
+
+// Target returns true when target reached. receives node and cost.
+func (g *graph) Target(a position, c int16) bool {
+	if a.loc == g.target && a.steps >= g.min && a.steps <= g.max {
+		return true
+	}
+	return false
+}
+
+// Seen attempt at simplifying the seen to use horizontal/vertical and no steps.
+// It returns correct for part1 but not part 2..
+func (g *graph) Seen(a position) position {
+	if g.seenFn != nil {
+		return g.seenFn(a)
+	}
+	return a
+}
+
+func seenFn(a position) position {
+	if a.direction == U {
+		a.direction = D
+	}
+	if a.direction == L {
+		a.direction = R
+	}
+	// a.steps = 0
+	return a
+}
+
+func search(m Map, minSteps, maxSteps int8, seenFn func(position) position) int {
+	rows, cols := m.Size()
+	start := Point{}
+	target := Point{rows - 1, cols - 1}
+
+	g := graph{min: minSteps, max: maxSteps, m: m, target: target, seenFn: seenFn}
+
+	cost, path, closed := aoc.FindPath[int16, position](&g, position{loc: start}, position{loc: target})
+
+	log("total map reads = ", g.reads, "cost = ", cost)
+	printGraph(m, path, closed, g.seenFn)
+
+	return int(cost)
+}
+
+// printGraph with the path/cost overlay
+func printGraph(m Map, path []position, closed map[position]int16, seenFn func(a position) position) {
+	pts := make(map[Point]position, len(path))
+	for _, pt := range path {
+		pts[pt.loc] = pt
+	}
+
+	clpt := make(map[position]position, len(closed))
+	for pt := range closed {
+		clpt[position{loc: pt.loc, steps: pt.steps}] = pt
+	}
+
+	for r, row := range m {
+		// if r == 0 {
+		// 	for c := range row {
+		// 		if c == 0 {
+		// 			fmt.Print("     ")
+		// 		}
+		// 		fmt.Printf("% 5d", c)
+		// 	}
+		// 	fmt.Println("")
+		// }
+		for c := range row {
+			// if c == 0 {
+			// 	fmt.Printf("% 5d", r)
+			// }
+
+			if pt, ok := pts[Point{int16(r), int16(c)}]; ok {
+				if seenFn != nil {
+					pt = seenFn(pt)
+				}
+				_ = pt
+				// fmt.Printf("% 5d", closed[pt])
+				fmt.Print("*")
+
+				continue
+			}
+
+			// fmt.Print(" ....")
+			fmt.Print(" ")
+		}
+		fmt.Println("")
+	}
+	fmt.Println("")
+}

aoc2023/day18/example.txt

@@ -0,0 +1,14 @@
+R 6 (#70c710)
+D 5 (#0dc571)
+L 2 (#5713f0)
+D 2 (#d2c081)
+R 2 (#59c680)
+D 2 (#411b91)
+L 5 (#8ceee2)
+U 2 (#caa173)
+L 1 (#1b58a2)
+U 2 (#caa171)
+R 2 (#7807d2)
+U 3 (#a77fa3)
+L 2 (#015232)
+U 2 (#7a21e3)

aoc2023/day18/input.txt

@@ -0,0 +1,766 @@
+R 4 (#0a7a60)
+U 8 (#4453b3)
+R 6 (#8e4f70)
+U 2 (#4453b1)
+R 4 (#0feb00)
+U 4 (#355591)
+R 8 (#2a09c0)
+U 4 (#544c71)
+R 4 (#472930)
+U 2 (#199e33)
+R 3 (#3d8df0)
+U 5 (#199e31)
+R 7 (#45de50)
+U 4 (#57a941)
+L 7 (#671c70)
+U 5 (#5e5e81)
+R 4 (#2e9b60)
+U 8 (#490881)
+L 7 (#1846f0)
+U 3 (#304101)
+L 4 (#1846f2)
+D 2 (#58f3f1)
+L 9 (#2e9b62)
+D 2 (#56dcd1)
+L 2 (#671c72)
+D 9 (#275fd1)
+L 4 (#76b7b2)
+U 9 (#5b9641)
+L 4 (#1d3212)
+U 10 (#3d1841)
+L 3 (#5ad5e2)
+D 6 (#010211)
+L 5 (#13ec52)
+D 8 (#166471)
+L 3 (#53ebc0)
+D 5 (#0fdba1)
+L 4 (#54e450)
+D 9 (#440a21)
+L 3 (#49b242)
+D 5 (#2f0171)
+L 6 (#447332)
+D 4 (#182561)
+L 8 (#1aaaa2)
+D 6 (#0996a1)
+L 4 (#1c1212)
+D 6 (#5780d1)
+L 7 (#0fc1d2)
+D 7 (#36cb41)
+L 3 (#505552)
+D 7 (#8d8b81)
+R 4 (#2bf742)
+D 7 (#152791)
+R 5 (#760492)
+D 3 (#11a991)
+R 3 (#5debc0)
+D 10 (#59f211)
+L 4 (#66d342)
+D 8 (#1fc6b1)
+R 4 (#66d340)
+D 6 (#72dff1)
+L 2 (#3f1b10)
+D 4 (#2fca13)
+L 10 (#2d0162)
+D 5 (#8b5e53)
+L 6 (#2d0160)
+U 2 (#317053)
+L 2 (#650c20)
+U 7 (#2bed01)
+R 10 (#409ed0)
+U 2 (#166713)
+L 10 (#939350)
+U 6 (#166711)
+L 4 (#38a180)
+D 3 (#1d95f1)
+L 6 (#11ea60)
+D 5 (#931dc1)
+R 6 (#11bf70)
+D 7 (#536051)
+L 3 (#995b60)
+D 2 (#254e91)
+L 3 (#332fd2)
+U 6 (#7669f1)
+L 3 (#574642)
+U 6 (#1778a1)
+L 3 (#1a00c2)
+U 5 (#2eaa81)
+L 3 (#1cf8e2)
+U 6 (#0c71a1)
+L 6 (#868472)
+U 3 (#0a9fd1)
+R 9 (#104c02)
+U 4 (#082451)
+L 7 (#850d02)
+U 6 (#082453)
+L 7 (#322552)
+U 3 (#1339d1)
+L 6 (#8e11d2)
+U 4 (#6c5691)
+R 6 (#1dda10)
+U 3 (#25e5c3)
+R 7 (#370670)
+U 4 (#9324f1)
+L 3 (#451030)
+U 7 (#1f1021)
+L 7 (#0ba3c0)
+U 5 (#8a10a3)
+L 8 (#67db30)
+U 5 (#282473)
+L 4 (#0cd350)
+U 4 (#25e5c1)
+R 3 (#6b4ee0)
+U 4 (#333cf1)
+R 5 (#02b610)
+D 4 (#4e7cc1)
+R 3 (#92abb0)
+U 5 (#2f6ff1)
+R 5 (#483360)
+U 5 (#7b1cd1)
+L 8 (#3a5d50)
+U 3 (#1d2461)
+R 8 (#3b2fd0)
+U 5 (#630763)
+R 6 (#5033c0)
+U 3 (#252523)
+R 7 (#08eeb0)
+U 8 (#516633)
+L 7 (#156240)
+U 4 (#2db063)
+L 3 (#791070)
+D 5 (#2920a3)
+L 3 (#0dafe0)
+U 5 (#4185b3)
+L 5 (#7ac0e0)
+U 2 (#5a6cd3)
+L 2 (#3ca790)
+U 7 (#755403)
+L 4 (#3b0740)
+U 5 (#2004a3)
+L 3 (#2db4f0)
+U 6 (#602a23)
+R 5 (#32c1c0)
+D 2 (#000f53)
+R 5 (#388360)
+D 7 (#24d9e3)
+R 4 (#4703a0)
+D 3 (#2f1133)
+R 3 (#4703a2)
+U 11 (#52e853)
+R 5 (#278132)
+D 11 (#0665e3)
+R 3 (#239112)
+U 6 (#8f0ad1)
+R 5 (#447de2)
+U 6 (#8f0ad3)
+R 6 (#636122)
+U 2 (#187283)
+R 3 (#5aae62)
+U 10 (#1d8833)
+L 5 (#476db0)
+U 5 (#136393)
+L 7 (#29e6b0)
+U 5 (#136391)
+R 7 (#3ba060)
+U 3 (#635e23)
+L 5 (#2042f0)
+U 3 (#181643)
+L 6 (#5af952)
+U 8 (#28d0b1)
+L 2 (#4a98f2)
+U 9 (#28d0b3)
+L 6 (#27a572)
+D 3 (#3d7213)
+L 4 (#516842)
+D 11 (#21ef63)
+L 5 (#38e342)
+D 2 (#1118b3)
+L 3 (#560502)
+D 9 (#1118b1)
+R 2 (#1c39a2)
+D 2 (#303ab3)
+R 6 (#716ba0)
+D 6 (#780a93)
+L 8 (#77ec30)
+U 2 (#780a91)
+L 3 (#271100)
+U 10 (#5882f3)
+L 4 (#2050c2)
+D 3 (#434843)
+L 3 (#7d9572)
+D 2 (#3129b3)
+L 5 (#21fb12)
+D 5 (#8c2c33)
+L 4 (#57bf92)
+D 6 (#2730b3)
+L 4 (#6a3902)
+D 8 (#4656a3)
+L 5 (#60ac80)
+D 4 (#43b863)
+R 9 (#3d69a0)
+D 8 (#3ca913)
+L 2 (#411d80)
+D 3 (#725383)
+L 8 (#4a98d0)
+D 9 (#274553)
+L 5 (#580d60)
+U 5 (#568223)
+L 6 (#473af0)
+U 5 (#827593)
+L 7 (#251dc2)
+U 5 (#0fcea3)
+L 8 (#5ae3d2)
+U 3 (#4efa11)
+R 9 (#389852)
+U 2 (#7f7f91)
+R 6 (#618342)
+U 3 (#441143)
+L 7 (#886df2)
+U 3 (#26a093)
+L 8 (#886df0)
+U 4 (#63c7d3)
+L 3 (#04f842)
+D 10 (#0fcea1)
+L 6 (#388e62)
+U 10 (#3ae7f3)
+L 3 (#2a6880)
+U 6 (#3bfd53)
+L 6 (#73a0c0)
+U 5 (#3bfd51)
+L 4 (#0d18a0)
+U 2 (#19da93)
+L 6 (#120600)
+U 8 (#233b53)
+L 6 (#2e1050)
+U 3 (#4b2aa3)
+L 4 (#5f9930)
+U 10 (#6e65f1)
+R 6 (#1eefa0)
+U 9 (#50b9d3)
+R 2 (#548ed0)
+U 9 (#50b9d1)
+R 7 (#8bd9f0)
+U 4 (#5ae473)
+R 6 (#0b0490)
+U 10 (#186891)
+R 4 (#764830)
+U 7 (#33b0e1)
+R 5 (#363c90)
+U 8 (#7bd631)
+R 7 (#031e30)
+U 7 (#095881)
+R 3 (#640e50)
+D 5 (#02e7f3)
+R 7 (#0922f0)
+D 7 (#6b7af3)
+R 9 (#0922f2)
+D 3 (#62e543)
+R 3 (#21e320)
+U 9 (#5ead81)
+R 7 (#01fd70)
+D 9 (#3b0cf1)
+R 2 (#2758a0)
+D 5 (#7279b1)
+R 8 (#5c7dc0)
+D 7 (#3c8db1)
+R 4 (#3c3740)
+U 2 (#26b151)
+R 6 (#11eb12)
+U 4 (#587921)
+R 6 (#11eb10)
+U 4 (#320051)
+R 4 (#038630)
+U 3 (#6a2e61)
+R 2 (#4ff680)
+U 5 (#3c57f1)
+R 9 (#0b2440)
+U 8 (#497533)
+L 6 (#704680)
+U 11 (#549113)
+R 6 (#23b470)
+U 4 (#9e0641)
+R 7 (#1aeec0)
+D 7 (#4a6331)
+R 2 (#547d80)
+D 5 (#457a71)
+R 9 (#7daa90)
+D 4 (#16d7b1)
+L 6 (#266810)
+D 3 (#363561)
+L 5 (#5312b2)
+D 4 (#42c301)
+R 5 (#9a0952)
+D 7 (#42c303)
+R 7 (#7d1df2)
+D 4 (#51e321)
+R 5 (#609422)
+D 4 (#3b8f01)
+R 6 (#644792)
+U 4 (#2d8b11)
+R 7 (#22bbc2)
+D 7 (#6b39b1)
+R 5 (#680e72)
+U 2 (#7f9f31)
+R 3 (#0e9b52)
+U 3 (#3086c1)
+R 3 (#5a60c0)
+U 6 (#53b6e3)
+R 7 (#8117d0)
+U 7 (#53b6e1)
+R 3 (#2cb930)
+U 3 (#1bffd1)
+R 6 (#4539f0)
+U 8 (#680411)
+R 4 (#6032c0)
+U 6 (#255061)
+R 3 (#5562a0)
+U 6 (#088071)
+R 3 (#3bf2f0)
+U 5 (#52bdb1)
+L 6 (#070500)
+U 5 (#69e001)
+R 6 (#070502)
+U 3 (#071051)
+R 2 (#036000)
+U 4 (#0ea8a1)
+R 5 (#05e4d0)
+U 3 (#674de1)
+R 3 (#804250)
+D 6 (#3ffca1)
+R 4 (#23dcb2)
+D 6 (#9f9841)
+L 5 (#45f210)
+D 9 (#15efc1)
+R 5 (#45f212)
+D 4 (#969551)
+L 9 (#23dcb0)
+D 2 (#41bea1)
+L 4 (#2f2a32)
+D 4 (#71ffd1)
+R 3 (#5c0bb2)
+D 7 (#6f3501)
+R 4 (#2b0a72)
+D 4 (#7b3571)
+R 3 (#1c67d2)
+U 11 (#42f011)
+R 3 (#51ae62)
+D 3 (#75fcf1)
+R 3 (#1f4742)
+D 4 (#2813f1)
+R 4 (#3d1812)
+D 2 (#2b1d01)
+R 11 (#1eb302)
+U 3 (#27b0a1)
+R 4 (#227b20)
+U 5 (#34b7e1)
+R 10 (#201220)
+U 7 (#0502f3)
+R 4 (#5ab7f0)
+U 4 (#0502f1)
+R 4 (#5d09b0)
+U 7 (#504a81)
+R 7 (#1e8250)
+U 3 (#715aa1)
+R 6 (#26d290)
+U 6 (#9a12f1)
+L 3 (#18be90)
+U 8 (#037d11)
+L 5 (#647600)
+U 3 (#40b983)
+L 5 (#04e450)
+U 3 (#9a9a43)
+L 8 (#04e452)
+U 6 (#8af153)
+R 8 (#6cbc90)
+U 4 (#04d121)
+L 4 (#285292)
+U 3 (#688d51)
+L 6 (#176332)
+U 4 (#400a91)
+L 5 (#176330)
+U 5 (#43def1)
+R 2 (#285290)
+U 2 (#3e0711)
+R 3 (#7eb9c0)
+U 7 (#36f611)
+R 7 (#666af0)
+D 7 (#381b31)
+R 3 (#298922)
+U 3 (#475671)
+R 6 (#977c12)
+D 4 (#602d01)
+R 6 (#25b0c2)
+D 6 (#7ede81)
+R 3 (#1d58c2)
+D 8 (#873523)
+L 9 (#265ae2)
+D 3 (#57d663)
+R 7 (#1565c2)
+D 8 (#06ed11)
+R 4 (#a348c2)
+D 2 (#06ed13)
+R 8 (#12d052)
+D 4 (#2d3741)
+L 7 (#0ccfd2)
+D 3 (#1fcd61)
+R 4 (#39a4c2)
+D 3 (#44f7f1)
+R 6 (#5c3202)
+D 8 (#2625c1)
+L 8 (#2b08c2)
+D 2 (#20d7e1)
+L 2 (#67b892)
+D 10 (#546471)
+R 7 (#484ef2)
+D 7 (#49bc91)
+R 4 (#91aa72)
+U 11 (#499591)
+R 3 (#0048b2)
+U 7 (#34a7a1)
+R 7 (#514600)
+U 8 (#1cdc43)
+L 7 (#471470)
+U 3 (#8c8393)
+R 3 (#18a780)
+U 5 (#8c8391)
+R 3 (#4e6f80)
+U 3 (#1cdc41)
+R 8 (#428930)
+U 5 (#5dcb51)
+R 3 (#4b21e2)
+U 4 (#0464b1)
+R 9 (#850552)
+D 8 (#464881)
+R 7 (#543852)
+D 3 (#2d3a11)
+R 3 (#081b22)
+D 5 (#0cc731)
+R 7 (#6990e0)
+D 3 (#79d7b1)
+R 3 (#509520)
+D 5 (#438571)
+R 3 (#27d510)
+D 3 (#30d2d3)
+L 8 (#1b7a00)
+D 5 (#8a0da3)
+L 8 (#1b7a02)
+U 5 (#027cb3)
+L 7 (#350130)
+D 8 (#2ff771)
+R 7 (#16dc02)
+D 2 (#68f1c1)
+R 5 (#02f782)
+D 6 (#4e2a41)
+R 11 (#448e32)
+D 5 (#2cfac1)
+L 11 (#417502)
+D 5 (#2cfac3)
+L 4 (#22f022)
+U 9 (#1e9f01)
+L 5 (#543572)
+U 3 (#076e31)
+L 6 (#081b20)
+U 5 (#1ae851)
+L 3 (#823132)
+U 9 (#2d7993)
+L 4 (#5738f2)
+D 8 (#79e273)
+L 4 (#5c9ad2)
+D 8 (#4ed1b3)
+L 3 (#311722)
+D 4 (#0d5493)
+L 6 (#5d63e0)
+D 6 (#178cf3)
+L 5 (#75b1b0)
+D 5 (#178cf1)
+L 6 (#11d550)
+D 6 (#44ed03)
+L 3 (#76a842)
+U 6 (#3b6993)
+L 5 (#184892)
+D 4 (#5c8163)
+L 3 (#14d872)
+U 2 (#261a01)
+L 5 (#2d01e2)
+U 9 (#326ca3)
+L 4 (#59ad32)
+U 8 (#326ca1)
+R 4 (#389ab2)
+U 9 (#261a03)
+L 4 (#50cb42)
+D 4 (#2f8263)
+L 5 (#9f3752)
+D 6 (#4bb383)
+L 4 (#2693f2)
+D 4 (#19dca3)
+R 4 (#475bc2)
+D 6 (#960e13)
+L 7 (#0c90a2)
+D 8 (#3463d3)
+L 6 (#5a82e2)
+D 3 (#5a5c43)
+R 7 (#120bf2)
+D 3 (#5069e3)
+R 3 (#4b47a2)
+D 6 (#635b63)
+R 4 (#66ca10)
+U 4 (#1418f1)
+R 7 (#1d5470)
+D 4 (#1418f3)
+R 8 (#66d4f0)
+D 5 (#3c5533)
+R 4 (#2f6e02)
+D 3 (#2cf5e3)
+R 4 (#633ec2)
+D 7 (#2cf5e1)
+R 7 (#5846b2)
+D 3 (#4f9d63)
+R 4 (#533380)
+D 11 (#13c7e3)
+R 2 (#222b62)
+D 3 (#928ab3)
+R 5 (#222b60)
+U 5 (#0a4793)
+R 5 (#15d3b0)
+U 8 (#363fe1)
+R 4 (#2feb30)
+U 5 (#05d8b1)
+R 3 (#39e030)
+U 3 (#05d8b3)
+R 2 (#3cd780)
+U 8 (#02c781)
+R 5 (#186452)
+D 3 (#37bba1)
+R 5 (#9e1232)
+D 5 (#58e6f1)
+R 5 (#182c30)
+D 5 (#072db1)
+R 5 (#85e600)
+D 4 (#607651)
+R 5 (#186450)
+D 3 (#0aca91)
+L 5 (#0ceb10)
+D 5 (#860001)
+L 6 (#54c8b0)
+U 5 (#393971)
+L 4 (#37c390)
+D 3 (#1f1433)
+L 5 (#3d8790)
+D 6 (#353623)
+R 4 (#78c830)
+D 4 (#6fafa3)
+R 6 (#2b0612)
+D 5 (#31fff3)
+R 7 (#8b49b2)
+D 9 (#6f0ee3)
+R 5 (#4212e0)
+D 6 (#5d11f3)
+R 6 (#648340)
+D 8 (#393743)
+R 6 (#34ddd0)
+U 8 (#346fb3)
+R 5 (#34fc22)
+D 4 (#71c453)
+R 6 (#5048f2)
+D 4 (#0bb993)
+R 4 (#42b9f0)
+D 9 (#5cdf83)
+R 5 (#42b9f2)
+D 3 (#6f3f93)
+R 3 (#3dbae2)
+D 8 (#495363)
+R 9 (#328ba2)
+D 3 (#77afa1)
+R 5 (#575710)
+D 2 (#10d861)
+R 4 (#257822)
+D 4 (#6efe61)
+R 9 (#257820)
+D 5 (#521d01)
+R 5 (#575712)
+D 6 (#494cf1)
+L 5 (#683ab2)
+D 4 (#5e79c3)
+L 3 (#4242a2)
+D 4 (#5e79c1)
+L 7 (#2c3442)
+D 8 (#2fbd23)
+L 5 (#636fb2)
+D 5 (#63bd53)
+L 2 (#299960)
+D 6 (#31ea33)
+R 3 (#51dfb0)
+D 7 (#4e4ec3)
+R 4 (#7b7912)
+D 5 (#4b4bf3)
+R 4 (#54e882)
+D 5 (#7d2193)
+R 3 (#3b77d2)
+D 3 (#826973)
+R 8 (#646ec2)
+D 4 (#076c63)
+L 10 (#674052)
+D 6 (#3676b1)
+L 9 (#3bd890)
+D 4 (#7feb71)
+L 3 (#3bd892)
+D 3 (#27fc21)
+R 8 (#66bba2)
+D 8 (#645c73)
+R 5 (#43e132)
+D 5 (#51d9e3)
+R 8 (#43e130)
+D 6 (#2827f3)
+R 4 (#412c92)
+D 5 (#7e7f63)
+L 4 (#218122)
+D 4 (#546e83)
+L 9 (#82f672)
+D 8 (#6ed383)
+L 3 (#701412)
+D 7 (#47de23)
+L 5 (#46f912)
+D 7 (#0d9ec3)
+L 4 (#515142)
+D 3 (#4699e3)
+L 9 (#2ed562)
+U 6 (#00a273)
+L 9 (#8d7d12)
+U 2 (#6c3a83)
+L 7 (#318fa2)
+U 7 (#0bd473)
+L 2 (#6d5050)
+U 10 (#415673)
+R 3 (#9e8420)
+U 6 (#1ff213)
+R 5 (#0c8bf0)
+U 2 (#479a11)
+R 6 (#977360)
+U 5 (#479a13)
+L 8 (#250680)
+U 2 (#1ff211)
+L 3 (#216630)
+U 3 (#22d143)
+L 3 (#3b4342)
+U 7 (#9d4ff3)
+L 5 (#43aca2)
+U 6 (#29efd3)
+L 3 (#5c6a12)
+D 11 (#134a73)
+L 6 (#2a0982)
+U 11 (#444723)
+L 4 (#47e2e2)
+U 4 (#6855c3)
+L 4 (#06a382)
+U 4 (#2222e3)
+R 3 (#4edc62)
+U 6 (#9a2683)
+R 6 (#131872)
+U 10 (#4f5a23)
+R 4 (#858f70)
+U 5 (#4d4823)
+L 9 (#3f73f0)
+U 3 (#46f5a3)
+L 4 (#935370)
+U 4 (#46f5a1)
+L 5 (#3ca140)
+U 6 (#07b1e3)
+L 5 (#61ecd0)
+U 5 (#654743)
+L 5 (#3cec42)
+U 6 (#30bb83)
+R 3 (#920782)
+U 6 (#1f9323)
+R 8 (#3d8aa2)
+U 8 (#7492c3)
+R 3 (#301cd2)
+U 3 (#32e2f1)
+R 4 (#6936f2)
+U 6 (#32e2f3)
+R 6 (#5112c2)
+U 7 (#535b53)
+L 10 (#61f4d0)
+U 3 (#915863)
+L 2 (#51d540)
+U 5 (#32dee1)
+L 10 (#4ec320)
+U 5 (#406bc1)
+L 2 (#1b3890)
+U 3 (#681181)
+L 6 (#35ed60)
+D 9 (#153fd3)
+L 5 (#323e30)
+U 5 (#381ad3)
+L 3 (#69a550)
+U 3 (#310f63)
+L 4 (#2cbb80)
+U 5 (#3448a3)
+R 6 (#206282)
+U 5 (#202ab1)
+L 6 (#83af82)
+U 4 (#202ab3)
+L 4 (#248d02)
+D 9 (#28a983)
+L 4 (#32cf10)
+D 7 (#249d73)
+R 4 (#2f5c70)
+D 6 (#021c93)
+L 7 (#957782)
+D 6 (#550e53)
+R 5 (#957780)
+D 6 (#50bb13)
+R 9 (#49b7f2)
+U 6 (#096e93)
+R 4 (#769452)
+D 3 (#6dc543)
+R 5 (#2ad352)
+D 7 (#167963)
+L 10 (#673682)
+D 5 (#152883)
+L 10 (#13f332)
+D 3 (#996721)
+L 4 (#4be2a2)
+D 4 (#9c2443)
+L 4 (#2b83b0)
+D 3 (#5d63b3)
+L 9 (#9cfd40)
+D 7 (#49e793)
+L 7 (#0b5422)
+D 8 (#5c51b3)
+L 2 (#6db152)
+D 4 (#215b53)
+L 3 (#38dc12)
+D 8 (#7dad01)
+L 6 (#559e22)
+D 3 (#929d23)
+L 2 (#0f7560)
+D 6 (#448d13)
+L 7 (#73a972)
+D 2 (#2221c3)
+L 3 (#73a970)
+D 5 (#53b553)
+R 10 (#513590)
+D 3 (#293c83)
+L 10 (#58e2e0)
+D 4 (#54dd21)
+L 5 (#1bcdf2)
+D 5 (#4b0b71)
+L 5 (#1bcdf0)
+U 6 (#43b811)
+L 5 (#4df1d0)
+U 6 (#36d6a3)
+R 5 (#3bfb20)
+U 5 (#75de61)
+L 5 (#1e0ec2)
+U 4 (#30b571)
+L 7 (#2dfd20)
+D 5 (#49ad61)
+L 2 (#2dfd22)
+D 11 (#715d41)
+L 3 (#1e0ec0)
+U 4 (#0f2091)
+L 4 (#9d29c0)
+U 9 (#475a73)
+L 2 (#108610)
+U 3 (#1e5423)
+L 8 (#394192)
+U 3 (#0274b3)

aoc2023/day18/main.go

@@ -0,0 +1,89 @@
+package main
+
+import (
+	"bufio"
+	_ "embed"
+	"fmt"
+	"strconv"
+	"strings"
+
+	aoc "go.sour.is/advent-of-code"
+	"golang.org/x/exp/maps"
+)
+
+// var log = aoc.Log
+
+func main() { aoc.MustResult(aoc.Runner(run)) }
+
+type result struct {
+	valuePT1 int
+	valuePT2 int
+}
+
+func (r result) String() string { return fmt.Sprintf("%#v", r) }
+
+func run(scan *bufio.Scanner) (*result, error) {
+
+	var vecsPT1 []aoc.Vector
+	var vecsPT2 []aoc.Vector
+
+	for scan.Scan() {
+		text := scan.Text()
+
+		if len(text) == 0 {
+			continue
+		}
+
+		v, color := fromLine(text)
+
+		vecsPT1 = append(vecsPT1, v)
+		vecsPT2 = append(vecsPT2, fromColor(color))
+	}
+	return &result{
+		valuePT1: findArea(vecsPT1),
+		valuePT2: findArea(vecsPT2),
+	}, nil
+}
+
+var OFFSET = map[string]aoc.Point[int]{
+	"R": {0, 1},
+	"D": {1, 0},
+	"L": {0, -1},
+	"U": {-1, 0},
+}
+var OFFSET_INDEXES = maps.Values(OFFSET)
+
+func fromLine(text string) (aoc.Vector, string) {
+	v := aoc.Vector{}
+	s, text, _ := strings.Cut(text, " ")
+	v.Offset = OFFSET[s]
+
+	s, text, _ = strings.Cut(text, " ")
+	v.Scale = aoc.Atoi(s)
+
+	_, text, _ = strings.Cut(text, "(#")
+	s, _, _ = strings.Cut(text, ")")
+	return v, s
+}
+
+func fromColor(c string) aoc.Vector {
+	scale, _ := strconv.ParseInt(c[:5], 16, 64)
+	offset := OFFSET_INDEXES[c[5]-'0']
+
+	return aoc.Vector{
+		Offset: offset,
+		Scale:  int(scale),
+	}
+}
+
+func findArea(vecs []aoc.Vector) int {
+	shoelace := []aoc.Point[int]{{0, 0}}
+	borderLength := 0
+
+	for _, vec := range vecs {
+		shoelace = append(shoelace, shoelace[len(shoelace)-1].Add(vec.Point()))
+		borderLength += vec.Scale
+	}
+
+	return aoc.NumPoints(shoelace, borderLength)
+}

aoc2023/day18/main_test.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"testing"
+
+	_ "embed"
+
+	"github.com/matryer/is"
+)
+
+//go:embed example.txt
+var example []byte
+
+//go:embed input.txt
+var input []byte
+
+func TestExample(t *testing.T) {
+	is := is.New(t)
+	scan := bufio.NewScanner(bytes.NewReader(example))
+
+	result, err := run(scan)
+	is.NoErr(err)
+
+	t.Log(result)
+	is.Equal(result.valuePT1, 62)
+	is.Equal(result.valuePT2, 952408144115)
+}
+
+func TestSolution(t *testing.T) {
+	is := is.New(t)
+	scan := bufio.NewScanner(bytes.NewReader(input))
+
+	result, err := run(scan)
+	is.NoErr(err)
+
+	t.Log(result)
+	is.True(result.valuePT1 < 68834) // first attempt too high.
+	is.Equal(result.valuePT1, 46334)
+	is.Equal(result.valuePT2, 102000662718092)
+}

aoc2023/day19/example.txt

@@ -0,0 +1,17 @@
+px{a<2006:qkq,m>2090:A,rfg}
+pv{a>1716:R,A}
+lnx{m>1548:A,A}
+rfg{s<537:gd,x>2440:R,A}
+qs{s>3448:A,lnx}
+qkq{x<1416:A,crn}
+crn{x>2662:A,R}
+in{s<1351:px,qqz}
+qqz{s>2770:qs,m<1801:hdj,R}
+gd{a>3333:R,R}
+hdj{m>838:A,pv}
+
+{x=787,m=2655,a=1222,s=2876}
+{x=1679,m=44,a=2067,s=496}
+{x=2036,m=264,a=79,s=2244}
+{x=2461,m=1339,a=466,s=291}
+{x=2127,m=1623,a=2188,s=1013}

aoc2023/day19/input.txt

@@ -0,0 +1,780 @@
+ztj{s<2703:A,m<1025:vk,ztl}
+nqt{a>3513:R,s>2424:R,m>929:R,A}
+mr{s>2281:R,A}
+gf{x>2746:R,a<3379:jcl,R}
+gkv{x>2579:qlx,s>322:rxv,R}
+gdl{x<2917:A,s>82:A,s<54:R,R}
+hzc{m<1277:R,m>1355:A,x>953:A,R}
+xs{x>2337:ft,m>1444:A,R}
+hs{m<235:A,a<2424:A,x<3026:pvh,hqk}
+cls{a<1361:zch,s<3630:tnh,a<2359:px,spb}
+gq{m<1157:A,R}
+hc{m<2726:A,s>1302:A,R}
+lt{x>3157:A,a<3669:R,R}
+sf{x<3199:R,s>2680:jrl,x>3718:jh,R}
+hr{m>1737:A,A}
+bgg{x<171:A,x<283:R,R}
+pgb{m<1624:ksc,x>2675:bzc,bzn}
+zm{m<2599:sjc,m>3497:A,m<2946:A,A}
+gbb{x>860:bxv,a<2306:br,msc}
+gsl{x>53:A,A}
+zs{x<1669:kp,x<2690:ns,s>2951:cls,tvv}
+qhq{x<1264:A,m<1728:A,R}
+gg{s<239:A,s>340:R,x>3642:A,R}
+ktx{m>2620:R,m>2073:R,a<3539:R,R}
+xg{x<3497:fp,sgc}
+pms{m<3366:R,x>3570:A,R}
+gsb{x>2077:A,A}
+xf{s>3779:A,R}
+tfs{s>3844:rb,s<3703:scg,bk}
+bgb{a>2837:R,a>2812:A,A}
+nvk{s<2358:mr,x>2818:nqt,x<2757:lf,R}
+fg{a>1961:A,x<68:R,R}
+cfz{x>1567:A,m>951:A,a<2959:R,A}
+ljt{m>950:A,m<557:R,m<745:A,R}
+zcq{m>1403:th,fd}
+tbv{a>1532:R,R}
+dq{m>960:R,csz}
+tvv{a<2619:zh,m>1623:kb,vh}
+dzz{s>3136:R,s<2702:A,a>2889:R,R}
+lg{a<66:A,s>784:A,s>263:A,A}
+zfk{s<463:R,x>3180:A,R}
+bdh{s>356:A,s>193:A,m>482:R,R}
+tc{m>3454:R,x>3211:A,A}
+tz{x>3191:R,a<1319:R,R}
+cpn{m<2478:A,a<2228:A,a>3262:A,A}
+qmt{x<2144:R,flt}
+nsp{m<379:R,R}
+sxt{s<1011:A,a>1135:A,rl}
+bjg{m>973:lz,x>243:hh,a>1789:xl,xmg}
+cj{x>2137:nst,m<3002:A,s>3193:jc,pfr}
+lmc{a>2967:A,A}
+tv{m>1493:A,m<769:A,R}
+khc{m>2346:mbr,s>596:kvr,a<274:fzh,tb}
+zbk{s>1140:qrt,x>1818:pv,a>540:gt,gxc}
+kk{s>3728:R,s>3683:R,m<562:A,A}
+jv{m<848:zpq,a>1225:fsv,ztj}
+shb{a<242:A,m>2625:R,R}
+fhg{m>1372:R,A}
+dg{x>1246:qd,s<3289:lbf,a<1032:zzp,ks}
+cfq{s>2689:A,s>2613:R,A}
+gl{m>2798:cqm,s>3029:cnl,m>2233:A,qc}
+tkv{m<1884:A,A}
+fdm{m<1549:tgt,x<2498:kdf,s>528:jz,lt}
+vx{x<2948:xc,mgp}
+bs{m<687:A,R}
+kp{x>609:dkr,tqc}
+xpj{x<934:A,a>1772:A,A}
+rhd{x>956:A,a<2471:A,a<3414:A,A}
+srg{m>1381:A,s<264:A,A}
+szv{s>453:mff,nzj}
+ldl{a>3906:A,A}
+rxv{m<1632:R,m>1700:R,R}
+ch{s<3588:A,a<639:A,R}
+sc{s>2789:A,a<1419:R,R}
+gk{m>415:R,x>508:A,a<3053:R,R}
+rs{s<1893:R,m>2997:R,x<2049:R,R}
+ncn{s<722:R,m>3562:A,s>773:jm,vr}
+kz{x>3160:A,A}
+xxt{s>1035:R,a<942:R,R}
+pfr{m<3520:A,A}
+nh{a<638:mv,s>865:vm,nrf}
+sg{s>3051:vps,m>2918:A,zhs}
+xnj{x>3494:A,m>584:A,a<1897:A,R}
+jg{s<2380:R,a<2211:A,A}
+cqm{s<3107:R,a>3295:R,m>3224:R,A}
+hgv{m<203:A,s>107:R,A}
+vqt{x<2609:xkn,bnt}
+ft{s>3154:A,m>1087:R,A}
+qv{a>621:A,a>259:xp,m<2439:fbv,kpq}
+lzv{x<2186:gpt,lsb}
+lx{x>3655:A,s>2359:A,s>2271:R,R}
+xfj{s<407:sxx,R}
+tnh{x<3164:vx,js}
+mbr{s<671:A,R}
+tbn{m<2151:A,x<3001:R,R}
+zhp{m<3768:fgp,x>3307:rv,kj}
+qd{s<3201:A,s>3491:hgt,x>1468:A,R}
+qdk{s<1950:R,R}
+vn{s>2814:A,m>386:A,A}
+lv{x>3090:A,s>2406:znh,R}
+km{m>2029:A,m>1871:A,s<2456:A,R}
+ppc{m>2718:R,x<2889:A,x>3361:A,R}
+bk{a<3189:A,m>846:R,R}
+ht{s>2582:jts,x<3333:hx,rgx}
+bb{x<3122:A,x>3258:R,m>3625:A,A}
+fd{m>650:R,x<450:A,a<2254:gb,gk}
+dcf{s>1084:tzp,gbb}
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+bzn{m<1838:R,A}
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+fzz{x<3174:mq,a>1103:nn,m<533:bgn,mdq}
+xl{x>116:lmr,m<712:nvq,a>2807:jmf,R}
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+mcl{x>3441:R,s<2530:R,R}
+gn{a<3598:R,a>3777:A,x>861:A,R}
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+kr{m<471:R,hz}
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+fzh{a>101:A,x>3191:R,A}
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+tgt{m>1439:R,s>292:R,A}
+xvs{a<2848:A,A}
+vps{a>3227:A,x<1588:R,A}
+jzj{m<672:A,s<1122:R,R}
+zzp{x<901:ch,R}
+sl{s>1542:A,s>1296:R,x>1931:A,zxz}
+rjd{a>3500:xzq,s<1086:qj,xz}
+kgd{s>1426:A,a>3812:A,R}
+dmc{m<2947:szv,kqx}
+hbk{m<3419:A,R}
+htk{a<729:R,a>1042:A,a>861:R,zn}
+zp{s<1255:A,A}
+qlx{m>1631:R,x>3329:R,R}
+skv{x<1606:kkk,a<1440:ggv,a<3018:xkm,gjg}
+zl{m>3149:A,a>3596:A,R}
+sjc{m>2149:A,A}
+ggv{x>2600:nh,cg}
+pd{a<3356:pr,x<2700:xfj,a<3465:zbd,xv}
+vhk{a<614:A,a>735:A,m>3340:A,R}
+bz{x<2317:R,s<3304:A,A}
+zbd{m>889:zfk,bdh}
+vsj{a<598:zhd,R}
+qzf{a>1455:R,x>340:A,s<1196:R,R}
+dz{m<3157:qv,x>3473:hkl,a>877:sv,rf}
+rtg{a>2957:R,A}
+qk{a>3252:svq,s>3213:R,m>548:cfz,R}
+zx{a>871:sxt,a>314:mn,a>186:zz,nq}
+kcd{x<2880:R,s>94:R,R}
+hqc{m<796:R,m>890:rhd,a<2192:A,xvs}
+ffn{m>350:jp,a<2088:ttd,a>2817:R,R}
+sz{m<1599:R,x>2121:ktx,m<3075:bbt,qhh}
+jtt{a<3836:zqv,m<876:gg,A}
+lmr{a<2718:A,a<3149:R,R}
+zdv{s>3010:R,lr}
+jcl{m<1659:A,R}
+mdq{a<479:R,A}
+dnp{m<537:pht,s<885:qp,x<582:bjg,kjt}
+lxp{m>2932:A,lx}
+kqx{s<513:hbk,a<1592:ncn,a>3119:xrc,kt}
+cnl{x<1035:R,m<2338:A,R}
+mp{m<2347:xpj,a>2221:vdz,bq}
+rgx{s<2542:R,R}
+rb{s<3903:A,A}
+jk{m>2376:R,x>3391:R,m<1198:R,R}
+zgm{s>3092:bzj,sz}
+gt{a>1014:R,m<2365:ls,R}
+jpn{s>1819:hj,a>3326:vqr,ljm}
+nzj{s>254:R,m>2156:R,x<991:jf,qhq}
+gh{m>856:A,nsp}
+kpq{a<110:A,x>3312:R,x<3090:R,R}
+hl{x<3177:pj,bp}
+gs{a<180:R,s>3703:R,R}
+gz{m>3188:R,R}
+lft{s>2829:ps,gbj}
+kzb{m>2754:A,a<2674:A,A}
+vz{a>2453:pp,clg}
+tqc{x<360:dk,zcq}
+bxv{a<2317:A,m<2884:pn,fkp}
+ztl{a<590:R,x<2295:R,x>2529:R,R}
+vkk{a>3382:zc,x>3140:xrl,m<384:lft,rql}
+fbv{s<3805:R,s>3881:R,a>172:R,R}
+gbq{m>279:A,x<3717:R,x<3898:A,R}
+svn{s<1485:R,A}
+skb{s>589:R,s>295:R,x>2063:A,A}
+mc{a>272:A,x>3488:gs,s>3786:A,fsf}
+pbv{x<3811:R,a>3290:A,m<3444:R,A}
+gkn{s<1377:A,A}
+nth{a<1084:bd,A}
+vsl{a<2799:A,a<2901:bgb,fph}
+lr{x<1407:A,s>2654:R,s<2373:A,R}
+dbq{m<1824:R,s>291:R,A}
+hdt{s>3011:R,s>2681:A,bgg}
+nvq{m>597:R,x>47:R,A}
+qj{s>674:pz,s>313:srn,ntb}
+fgp{a>3257:R,mcl}
+pjd{s<3848:vlx,A}
+gmf{s<1729:A,A}
+kzp{x>1746:A,x>1670:A,m>2460:A,A}
+tl{m<888:A,m<1289:A,R}
+zh{m<1334:fzz,s>2674:vj,m<2347:cdt,cx}
+ql{s<1432:A,a>258:R,A}
+rch{s<485:R,vqq}
+hf{a<3208:R,pf}
+bj{x<2870:R,m<2489:A,R}
+zhg{x>3190:A,s>144:R,m<2941:A,R}
+rsh{x<3060:R,a<1833:pm,R}
+ntt{a>1930:R,a<1611:A,A}
+hd{s>1811:A,R}
+dfd{x<2726:A,qg}
+gqd{a>3471:qjt,qhl}
+xrl{x>3598:khp,m>284:lbp,m<100:R,xq}
+zxz{m<2818:A,R}
+vfn{s>1502:R,x>955:R,s>1440:A,R}
+dr{s<370:A,x>3070:R,R}
+cth{a<2210:cxk,a>3174:lhc,krr}
+xbr{m<1775:R,m>3200:A,A}
+nn{m>718:R,x>3641:nx,A}
+dxn{s<55:hr,x>3309:A,a<824:kcd,mqc}
+mt{a<423:R,a>555:R,R}
+hqk{a>2663:A,s<888:R,a<2564:R,A}
+ns{a<2307:lrn,qdj}
+sxb{s>318:vg,hgv}
+ljm{s<1457:A,m>763:A,s>1648:R,A}
+qcr{s<1460:R,m<548:hms,a>1054:A,nzq}
+sxx{a>3455:A,R}
+
+{x=378,m=450,a=211,s=36}
+{x=220,m=1090,a=338,s=879}
+{x=117,m=124,a=2136,s=128}
+{x=1392,m=1408,a=126,s=16}
+{x=2038,m=278,a=901,s=1801}
+{x=323,m=1703,a=964,s=571}
+{x=265,m=358,a=456,s=34}
+{x=1513,m=144,a=525,s=1341}
+{x=355,m=2036,a=814,s=1179}
+{x=937,m=701,a=2026,s=1349}
+{x=1292,m=766,a=2805,s=16}
+{x=319,m=26,a=83,s=1193}
+{x=600,m=5,a=242,s=76}
+{x=117,m=1415,a=1636,s=1057}
+{x=87,m=1530,a=1686,s=386}
+{x=36,m=957,a=1712,s=300}
+{x=2570,m=49,a=661,s=442}
+{x=643,m=698,a=1593,s=854}
+{x=1450,m=1410,a=289,s=1342}
+{x=1690,m=376,a=584,s=3715}
+{x=1942,m=570,a=1726,s=1192}
+{x=420,m=475,a=1410,s=863}
+{x=550,m=662,a=2140,s=105}
+{x=241,m=2370,a=756,s=26}
+{x=705,m=425,a=1000,s=160}
+{x=1763,m=914,a=197,s=555}
+{x=2267,m=323,a=70,s=147}
+{x=497,m=392,a=1959,s=360}
+{x=428,m=1375,a=415,s=236}
+{x=1800,m=96,a=403,s=1227}
+{x=216,m=381,a=1217,s=1031}
+{x=3129,m=304,a=811,s=1753}
+{x=555,m=59,a=3254,s=2896}
+{x=397,m=1518,a=740,s=496}
+{x=905,m=217,a=1234,s=2319}
+{x=283,m=2490,a=309,s=1156}
+{x=1777,m=624,a=96,s=2053}
+{x=1031,m=481,a=1014,s=198}
+{x=155,m=205,a=2460,s=832}
+{x=123,m=25,a=3962,s=3662}
+{x=3242,m=396,a=519,s=150}
+{x=2632,m=1307,a=3594,s=1714}
+{x=147,m=285,a=1020,s=40}
+{x=1498,m=1133,a=241,s=1263}
+{x=1977,m=323,a=1594,s=241}
+{x=807,m=1042,a=702,s=295}
+{x=70,m=455,a=1328,s=108}
+{x=2392,m=27,a=158,s=44}
+{x=528,m=671,a=2003,s=935}
+{x=1539,m=2002,a=168,s=479}
+{x=2121,m=195,a=901,s=1116}
+{x=251,m=51,a=380,s=745}
+{x=793,m=1959,a=598,s=605}
+{x=137,m=261,a=714,s=1548}
+{x=2783,m=486,a=2065,s=914}
+{x=574,m=387,a=250,s=28}
+{x=3,m=829,a=1862,s=2}
+{x=846,m=2476,a=841,s=1810}
+{x=1020,m=114,a=463,s=323}
+{x=4,m=970,a=192,s=142}
+{x=942,m=2297,a=125,s=1638}
+{x=1664,m=2275,a=2086,s=290}
+{x=682,m=93,a=143,s=2033}
+{x=1613,m=356,a=463,s=632}
+{x=633,m=268,a=150,s=798}
+{x=1743,m=1455,a=56,s=487}
+{x=2774,m=103,a=739,s=77}
+{x=1760,m=2631,a=81,s=138}
+{x=461,m=1688,a=1543,s=1712}
+{x=1182,m=14,a=566,s=3270}
+{x=680,m=467,a=1920,s=297}
+{x=1281,m=2355,a=704,s=1340}
+{x=142,m=65,a=589,s=20}
+{x=1412,m=559,a=677,s=2106}
+{x=905,m=2761,a=1526,s=648}
+{x=399,m=667,a=1901,s=27}
+{x=2241,m=3411,a=1786,s=321}
+{x=1395,m=1278,a=508,s=1112}
+{x=363,m=35,a=218,s=1280}
+{x=829,m=115,a=304,s=192}
+{x=1397,m=599,a=861,s=838}
+{x=824,m=2140,a=88,s=1736}
+{x=661,m=276,a=502,s=731}
+{x=585,m=14,a=705,s=473}
+{x=747,m=95,a=829,s=805}
+{x=2006,m=323,a=982,s=168}
+{x=795,m=193,a=473,s=1531}
+{x=687,m=428,a=972,s=1154}
+{x=254,m=426,a=281,s=552}
+{x=171,m=369,a=382,s=1369}
+{x=964,m=10,a=322,s=2007}
+{x=1960,m=183,a=2153,s=1967}
+{x=2315,m=170,a=41,s=727}
+{x=189,m=901,a=307,s=3026}
+{x=757,m=1235,a=1316,s=335}
+{x=836,m=3023,a=453,s=2355}
+{x=2187,m=2140,a=683,s=2560}
+{x=1772,m=468,a=1812,s=1329}
+{x=783,m=601,a=1339,s=3291}
+{x=570,m=172,a=1794,s=120}
+{x=1207,m=1572,a=700,s=758}
+{x=1961,m=3652,a=702,s=153}
+{x=1094,m=435,a=19,s=938}
+{x=3328,m=166,a=247,s=216}
+{x=1500,m=2012,a=1561,s=59}
+{x=12,m=2269,a=8,s=796}
+{x=193,m=1137,a=328,s=13}
+{x=120,m=1179,a=59,s=1829}
+{x=499,m=650,a=1049,s=1803}
+{x=2761,m=1431,a=389,s=1322}
+{x=456,m=2766,a=2165,s=348}
+{x=2387,m=12,a=2140,s=556}
+{x=387,m=7,a=1514,s=1137}
+{x=1111,m=608,a=581,s=965}
+{x=1055,m=181,a=754,s=67}
+{x=74,m=2582,a=66,s=546}
+{x=5,m=956,a=1013,s=657}
+{x=262,m=189,a=2496,s=233}
+{x=518,m=2821,a=851,s=825}
+{x=351,m=1981,a=221,s=34}
+{x=995,m=165,a=36,s=2286}
+{x=1636,m=335,a=936,s=447}
+{x=763,m=692,a=1527,s=210}
+{x=301,m=559,a=1815,s=2640}
+{x=959,m=2852,a=232,s=53}
+{x=136,m=153,a=206,s=11}
+{x=1533,m=42,a=2014,s=136}
+{x=341,m=378,a=37,s=577}
+{x=220,m=1451,a=185,s=421}
+{x=1086,m=3265,a=1184,s=2960}
+{x=143,m=2701,a=602,s=173}
+{x=628,m=1016,a=1642,s=223}
+{x=597,m=641,a=1331,s=651}
+{x=809,m=1843,a=1111,s=2189}
+{x=1385,m=1352,a=238,s=1969}
+{x=515,m=1374,a=125,s=913}
+{x=798,m=2743,a=1798,s=1045}
+{x=2999,m=1787,a=1168,s=188}
+{x=57,m=77,a=2652,s=56}
+{x=1231,m=304,a=1288,s=523}
+{x=1031,m=381,a=558,s=267}
+{x=721,m=883,a=2995,s=22}
+{x=304,m=846,a=1525,s=30}
+{x=446,m=2969,a=412,s=674}
+{x=187,m=418,a=1187,s=571}
+{x=810,m=515,a=819,s=1393}
+{x=740,m=3392,a=1128,s=1114}
+{x=137,m=631,a=1208,s=1707}
+{x=653,m=2468,a=952,s=811}
+{x=33,m=70,a=518,s=464}
+{x=3318,m=2,a=3661,s=64}
+{x=50,m=548,a=1657,s=704}
+{x=2272,m=2684,a=1597,s=2220}
+{x=185,m=339,a=460,s=517}
+{x=8,m=1651,a=1810,s=354}
+{x=548,m=833,a=1703,s=759}
+{x=551,m=358,a=390,s=468}
+{x=202,m=2260,a=597,s=632}
+{x=453,m=1811,a=754,s=2449}
+{x=353,m=101,a=1835,s=72}
+{x=1451,m=453,a=162,s=13}
+{x=125,m=2120,a=627,s=981}
+{x=5,m=283,a=1755,s=194}
+{x=973,m=835,a=62,s=1184}
+{x=346,m=1348,a=442,s=210}
+{x=4,m=1242,a=136,s=196}
+{x=2388,m=1336,a=1991,s=2873}
+{x=561,m=2335,a=1059,s=627}
+{x=838,m=3226,a=159,s=1053}
+{x=2578,m=49,a=1920,s=2432}
+{x=710,m=342,a=182,s=534}
+{x=1997,m=1509,a=946,s=1849}
+{x=810,m=249,a=495,s=257}
+{x=363,m=274,a=2742,s=25}
+{x=506,m=565,a=2584,s=731}
+{x=508,m=2073,a=21,s=1826}
+{x=1413,m=780,a=779,s=378}
+{x=1097,m=47,a=98,s=402}
+{x=536,m=2,a=2710,s=1499}
+{x=548,m=2845,a=2095,s=555}
+{x=2963,m=2206,a=1920,s=875}
+{x=1783,m=367,a=1245,s=594}
+{x=409,m=18,a=408,s=119}
+{x=1554,m=3613,a=3002,s=87}
+{x=232,m=197,a=63,s=1372}
+{x=412,m=1355,a=1673,s=1667}
+{x=261,m=142,a=123,s=1187}
+{x=1396,m=779,a=287,s=60}
+{x=28,m=1350,a=585,s=861}
+{x=1123,m=329,a=1166,s=62}
+{x=2292,m=73,a=123,s=596}
+{x=2400,m=1430,a=390,s=1313}
+{x=638,m=2856,a=44,s=488}
+{x=294,m=1534,a=1075,s=1914}
+{x=1233,m=71,a=253,s=3058}
+{x=1536,m=805,a=158,s=738}
+{x=2903,m=119,a=2344,s=2387}
+{x=142,m=1768,a=940,s=881}
+{x=301,m=2748,a=739,s=766}
+{x=127,m=18,a=141,s=1398}

aoc2023/day19/main.go

@@ -0,0 +1,255 @@
+package main
+
+import (
+	"bufio"
+	_ "embed"
+	"fmt"
+	"strings"
+
+	aoc "go.sour.is/advent-of-code"
+)
+
+// var log = aoc.Log
+
+func main() { aoc.MustResult(aoc.Runner(run)) }
+
+type result struct {
+	valuePT1 int
+	valuePT2 uint
+}
+
+func (r result) String() string { return fmt.Sprintf("%#v", r) }
+
+func run(scan *bufio.Scanner) (*result, error) {
+
+	var workflows = make(map[string][]rule)
+	var parts []part
+
+	for scan.Scan() {
+		text := strings.TrimSuffix(scan.Text(), "}")
+		if len(text) == 0 {
+			continue
+		}
+
+		// Is Part
+		if p, ok := scanPart(text); ok {
+			parts = append(parts, p)
+			continue
+		}
+
+		if name, r, ok := scanRule(text); ok {
+			workflows[name] = r
+		}
+	}
+
+	var result result
+	result.valuePT1 = solveWorkflow(parts, workflows)
+	result.valuePT2 = solveRanges(workflows)
+
+	return &result, nil
+}
+
+type part struct {
+	x, m, a, s int
+}
+
+func (p part) String() string {
+	return fmt.Sprintf("{x:%v m:%v a:%v s:%v}", p.x, p.m, p.a, p.s)
+}
+func scanPart(text string) (part, bool) {
+	var p part
+
+	// Is Part
+	if text[0] == '{' {
+		for _, s := range strings.Split(text[1:], ",") {
+			a, b, _ := strings.Cut(s, "=")
+			i := aoc.Atoi(b)
+			switch a {
+			case "x":
+				p.x = i
+			case "m":
+				p.m = i
+			case "a":
+				p.a = i
+			case "s":
+				p.s = i
+			}
+		}
+		return p, true
+	}
+	return p, false
+}
+
+type rule struct {
+	match string
+	op    string
+	value int
+	queue string
+}
+
+func scanRule(text string) (string, []rule, bool) {
+	name, text, _ := strings.Cut(text, "{")
+	var r []rule
+	for _, s := range strings.Split(text, ",") {
+		if a, b, ok := strings.Cut(s, "<"); ok {
+			b, c, _ := strings.Cut(b, ":")
+			r = append(r, rule{
+				match: a,
+				op:    "<",
+				value: aoc.Atoi(b),
+				queue: c,
+			})
+
+			continue
+		}
+		if a, b, ok := strings.Cut(s, ">"); ok {
+			b, c, _ := strings.Cut(b, ":")
+			r = append(r, rule{
+				match: a,
+				op:    ">",
+				value: aoc.Atoi(b),
+				queue: c,
+			})
+			continue
+		}
+
+		// default queue comes last
+		r = append(r, rule{queue: s})
+		break
+	}
+	return name, r, len(r) > 0
+}
+func (r rule) Match(p part) bool {
+	var value int
+
+	switch r.match {
+	case "x":
+		value = p.x
+	case "m":
+		value = p.m
+	case "a":
+		value = p.a
+	case "s":
+		value = p.s
+	default:
+		return true // default to new queue
+	}
+
+	if r.op == ">" && value > r.value {
+		return true
+	} else if r.op == "<" && value < r.value {
+		return true
+	}
+	return false // no match
+}
+
+func solveWorkflow(parts []part, workflows map[string][]rule) int {
+	// var rejected []part
+	var accepted []part
+
+	for _, p := range parts {
+		workflow := "in"
+
+	nextStep:
+		for workflow != "" {
+			for _, r := range workflows[workflow] {
+				if !r.Match(p) {
+					continue
+				}
+				workflow = r.queue
+
+				if workflow == "A" {
+					accepted = append(accepted, p)
+					workflow = ""
+					break nextStep
+				}
+				if workflow == "R" {
+					// rejected = append(rejected, p)
+					workflow = ""
+					break nextStep
+				}
+
+				continue nextStep
+			}
+		}
+	}
+
+	sum := 0
+	for _, p := range accepted {
+		sum += p.x
+		sum += p.m
+		sum += p.a
+		sum += p.s
+	}
+	return sum
+}
+
+func solveRanges(workflows map[string][]rule) uint {
+
+	pq := aoc.PriorityQueue(func(a, b *queue) bool { return false })
+	pq.Insert(&queue{
+		"in",
+		block{
+			ranger{1, 4000},
+			ranger{1, 4000},
+			ranger{1, 4000},
+			ranger{1, 4000},
+		}})
+
+	var accepted []block
+	// var rejected []block
+
+	for !pq.IsEmpty() {
+		current := pq.ExtractMin()
+		for _, rule := range workflows[current.name] {
+			next := &queue{name: rule.queue, block: current.block}
+
+			switch rule.match {
+			case "x":
+				current.x, next.x = split(current.x, rule.value, rule.op == ">")
+			case "m":
+				current.m, next.m = split(current.m, rule.value, rule.op == ">")
+			case "a":
+				current.a, next.a = split(current.a, rule.value, rule.op == ">")
+			case "s":
+				current.s, next.s = split(current.s, rule.value, rule.op == ">")
+			}
+
+			switch next.name {
+			case "R":
+				// rejected = append(rejected, next.block)
+
+			case "A":
+				accepted = append(accepted, next.block)
+
+			default:
+				pq.Insert(next)
+			}
+		}
+	}
+
+	var sum uint
+	for _, a := range accepted {
+		sum += uint((a.x[1] - a.x[0] + 1) * (a.m[1] - a.m[0] + 1) * (a.a[1] - a.a[0] + 1) * (a.s[1] - a.s[0] + 1))
+	}
+
+	return sum
+}
+
+type ranger [2]int
+type block struct {
+	x, m, a, s ranger
+}
+type queue struct {
+	name string
+	block
+}
+
+func split(a ranger, n int, gt bool) (current ranger, next ranger) {
+	if gt { // x > N => [0,N] [N++,inf]
+		return ranger{a[0], n}, ranger{n + 1, a[1]}
+	}
+
+	// x < N => [N,inf] [0,N--]
+	return ranger{n, a[1]}, ranger{a[0], n - 1}
+}

aoc2023/day19/main_test.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"testing"
+
+	_ "embed"
+
+	"github.com/matryer/is"
+)
+
+//go:embed example.txt
+var example []byte
+
+//go:embed input.txt
+var input []byte
+
+func TestExample(t *testing.T) {
+	is := is.New(t)
+	scan := bufio.NewScanner(bytes.NewReader(example))
+
+	result, err := run(scan)
+	is.NoErr(err)
+
+	t.Log(result)
+	is.Equal(result.valuePT1, 19114)
+	is.Equal(result.valuePT2, uint(167409079868000))
+}
+
+func TestSolution(t *testing.T) {
+	is := is.New(t)
+	scan := bufio.NewScanner(bytes.NewReader(input))
+
+	result, err := run(scan)
+	is.NoErr(err)
+
+	t.Log(result)
+	is.Equal(result.valuePT1, 377025)
+	is.Equal(result.valuePT2, uint(135506683246673))
+}

aoc2023/day21/example.txt

@@ -0,0 +1,11 @@
+...........
+.....###.#.
+.###.##..#.
+..#.#...#..
+....#.#....
+.##..S####.
+.##..#...#.
+.......##..
+.##.#.####.
+.##..##.##.
+...........

aoc2023/day21/input.txt

@@ -0,0 +1,131 @@
+...................................................................................................................................
+.#.......#..#...#.......#......#....#..#...#...#....#.#..........................................#...............#..........#......
+.............##..................#......#.#....#.......................##..#........................#......#..........#............
+......#..........................#....#.....#.............#................##....#.#.............#.........#.##...........#........
+.#................#............................#...........................#..##.....#..................#..##..#.#.........##......
+.....#.............#.....##.............##..........#...........#.............#.....#...........#.#.......#....#......#..........#.
+........#....................#....#.#.#......##........#...........#...........#..........#...#..........#......................#..
+.........#.#...#.......#........#........##...#...#..##........................................##...#.#........................#...
+......#.....#..#..#.#..#..............#...#..#.....#...........#.....#........#.#...........#...........#.#...............#.....#..
+...........#.......####..#.#..............##................#.#.#.....................##.....................#...#..............#..
+......###...#......#................##...#...#....#...........#...#..............#.........#..#..................................#.
+...............#..##..........#...........................##......#.##.........................#..#.#...........#.#...........#....
+...##........#...#...#...##...##...........#..#...................#...................#.#..#.........#.......#..#...........##...#.
+................#.....#..##......#.....#.....##............#..#..........##...........................#.#.......##.....#.....#.....
+.#..#.......#.#...#..##.....#............................#......#...#....#................#.#..#.....#.......##................#...
+...............#.....#........................#..........#.....#..............................................#..................#.
+.....#......#..........................................#....................................#..#.......#.#..#......#.#....#..##....
+............##............#.......###.......................#..#....#......................................#..#.........#..........
+..#...............#.....#...#...#......................#...#.#..............................#.#..#.#.....#.#.#..#....#.....#...##..
+.#.............................##.................#.......#.......##....#....................#.....#.#........#.....#........#.....
+.#....##...................##.....#.#..............#.#....#....#..#....#......#..........#.....##............#....#.............##.
+.........#....#.....#..#.........#....#.#..........#...#...#.......#....#..##.......................#.#..#........#..#....#..#.#...
+..#..................#.......#..#.#..............##.......#........#..............#.........#..#....#......#..#..........#.........
+........#.....#......#.....#......#...#.......#....#.......#.#..#................#....................##.............#.......#.....
+..#.................#..............#...........................................#.....#..................#...#.#..................#.
+.......#......#.....#...........................#.....#..................#.....................#.....#.#......#........#.#.......#.
+..#.#.#...................#...#..#................#....#.......#......................#...............#.........##...#.#.....###...
+.....#...#....##....#........####...........#.................#...#...........................................#..............##....
+..##.#..#.#..........#.#.#..#................................#..#.............#..#......#...........................#.##...........
+..............#.............................##........#..##........................#.............................#........#........
+........#.........#........#..#........#..#........#...#.#........#...........#.........................#.#..........#...#......#..
+.........##.....#........#.....................#..#.............#.....#........#....................#....#.#.#......#.....#........
+......................#...................####..#.........#....#.........#...........#..................#..#.................#.....
+..#.........#...#.....##................##.##....#.....#....#..............................#..#.............#..#...................
+..........##......#..#..............#.#....#......#................#.....#....#..............#..................#..................
+.#.#..####...#....................#.#.#.....#...#...................#....#.#.....#.#.......#.#...........#......#.#................
+.......#.........#..#.#..............###.......#....#.........................#.......#.###...#............#....#.#..#....###.#....
+........#....#...#......#.................#..........................#.........................#...........##.............#.#......
+.#..............#.....................#......#.............##............#..#..........#...................#...#....#..............
+......#..#..#.#...............#........###.......#.#...........#...........#.#.........#..#.....................#......#..#.#......
+.....#...............#.........#....#..........#.......#.......#......#...#..##.....#.....#........#.#.......#.......#..#...#......
+..#............#.....................#...#.......#....###...........#.....#.#.................#................#.........#..##.#...
+..............................#.....#..................................#.....##...............#.......#.........#.....#....##......
+..#...##...#...#..............#.................##..#......#.................#....#......#...#...#......#..........................
+.........#....#..............#........#..#...............#....#...#.....#..#......#.........#.......#.#..#........#...........#....
+........#..#....................#.........#...##.#.#..............#......#.#..........##...##....#......................#..........
+.##..#....#....#.......##......#............#..#......#.....##..................#####..#...#......#.#...#..........#.#.....#..#....
+..#...........#....................#.......#......#.........#...............#......#........##........#.................#.....#.#..
+..#....#.#...............#.#.........................#.............####..............................##................###.........
+.....#.......................................#....#...##...#.......#.......#.....#.##..##.................#.....................##.
+.........#...........#..#..##.#..........#..#.........#..#.....#...................................##....#...............#..#.#....
+.....#..#...........##............#........#..................#............#..........#..........#..#...........#..................
+............................#.........#...............#..................#.#....#.#..#........#.....#...........#...........#......
+................#...##.#....#..##..........#.#........##.#..#..#.....................#....#.................#.#...............#....
+.#.....#..............#.#..........#..#........#...............#..#.#..##..#.#.#.........................#.................#.......
+....#..............#................#.....#..#.......#..#.#.........#..........#..........#.....#..........##.....#............#...
+..............##...........#.......#......#..................#.......#.....#.#...#...............#.#........#......#............#..
+................#.....#....#........#....#.......#.#.##.....#...#..#.##...#................#.#.....#....#.............#............
+...........#.#.##..####.....#....#.#...#.#...........#...#.......................#.#....#.....#..#................###..............
+...................#....#..........#.#..##.....#..#..#......###............#..#...........#....#......#............................
+...........................................#.......#..............#.##.......##.......#...#.....#.#..#.....#..###..................
+............###........#.......#.#....#.....#....#..#........#.........##....#.....#..........#......#............#..#.#...........
+............#..........#................##.#..............#.....#................#....................................#..#.........
+...........#.....#.....................#...#.....#.......#..........#....#.....###.....##.#.##.#.....#......#......#.......#.......
+.....................#..#.....#...##.....#..#...........#....#....##............##.................##............##................
+.................................................................S.................................................................
+........#.#........#..........#.....#......#........#.#............#.#.........##...#............#...#.....#...........#.....#.....
+..................##.......#......#..#..................#..##......#.........#...#.........#............#....#...........##........
+..................#...........#.##.......#..............#....................#.#....#...##...#.....#.......#..#.....##.............
+...........#....#....##...#................................#.........#.................#....#.......................#...#..........
+.............#.#.#.....#.#...#.......#.#...........#....#.#.........#........##......#.......#.......##...#..........#.##..........
+...........##.#....#....#..#.....#...............#......................#...........#.....#...........#.#.......#..................
+.#.......................#.#...##.#....#.#...........#.#....##.##......#........................##....#.#....#.....................
+...#..................#.#...........##....###.................#....................##......#.....#............#.##....#.......##...
+.#..................####...#.#..#.##.#...####...#......#....................#..........................#....#......................
+.....#..........#.....#.#...............#.........##...#......#.#.....#...........#.....#............##......#.....#...............
+......#........#....#..#............................###.#...##........#........#.................#..#........#...............##....
+......................#.........................##....#...#..............#..#............#.#....#......##.#......#.........##......
+..................#....#...#.#.......#..............#..#..#...#.......#...#.....#.....#...............#.#.#...............#........
+...#...##......................##..##...........#......#.............#............#...........##.......#....#......................
+.............................##...........##...#...#.....#....#.......#.#..#.....##...............#..#.#......#..............##....
+...#..#.#...#.......#..................#............#....#.#.##.#.........#......#........#..#..........#....##...........#....#...
+.....#.............................#......#.#.....#.##.#.................#.........#..#..#.#.#........................#.#.......#..
+....#........#........#....#.#.#.....#.##............###.#..........#...##......#........##...#.........#.............#........#...
+..#..............................#.............................#......#...................#...#......#.............#...............
+.......#...#...............#.................##....................#....##.......#....##....##...#..................#..............
+.........................#...#..#.....##.............#...##.......#.....#...#..............#.....#.#.#..#........................#.
+......#.......##.#.............#....................#...#...........#...#..##....#.....#............#...........#........#.........
+...#....#...#......#........................#.....#.........#......#........#.....#.#...........#.#..............#......#....#.....
+........#..........#...................#...........##.#..#...#................#....##.............#................#....#..........
+........#.......#....#.............#..........#...................#.#....#.#........#..#..............................#..........#.
+............#........#....................#.#.........#......#.............#................#...#.............#....#...............
+..#..............................#..#....##.....#......................##...#..#.........#......#......................#...#...#.#.
+.##....#.............#...........##..................#...#..............#.......#................................#.........#.......
+.....#......#.#.....##...........#.....#.......#..........##..#.............#.#.........#.#.#.............##........#......#..#....
+.......#.......#.#.#..#......................#....#............##....#...........#.........................#......#................
+.........##.........#..............#.#.#....#...#.......#.................................#..##..................##.###.##...#.....
+......................#...#.#.......#..#.#..........#........#.......#.................#..................................#........
+....##........#.........#.........................#................#......#...#.....#..................................#..#.#......
+...##..............#..................#...#......#........###..#.......#..........#..............................#......#..........
+.#.#.#....#..........#......#.#.........#.....#...............................#.....#.#............#....#........#.............#...
+........#.........#.........#......................#..#......##.....#..#..........................#......##....#......##.##.....#..
+.##...#.......#.#....#..#.#...................#.........#....#...........#.....#.........#............##......#............#.......
+.##..#.........#..........#.#.................................#.#.#...............................#............#......##...#.#.....
+......#........#..#...#............#..............#............#......##.....#.................................#......#.#.....#....
+..........#........#...........#....................................#.....#...............................#............##....#.##..
+........#.............#..#......##..................#.............#..#...#.#.....#...#...............#........................#....
+....#...............#..........#....#...........................#....##.##...................#.#.......#...#.##....#........##..#..
+......#.....#..#..........###...#.................####.###..........#...........#..........#......#............................#...
+.#...#......#........#..#............##...............#.##......#...#.....#....................#.........#............#...#........
+................##...................#.##..............#...#..#.......#.......###........#..#..#........#...##.....................
+..............#....#..#..#.............##..............#................................#.....#..#....###.##..............#........
+..#..............#........................................#..........#.....#..................#............#..#....................
+.........#...#.....#...#...##...........#.###............##...#........#......................##......#....#.......#...............
+....#....#.....#.......#......................................#.#.#....#..#..#..........#...................#........#...#.........
+..#..#..................#..............#...#..#.........#......#....#.#................##..........#..#................#...........
+...#...................#...........#....#...#.............##...#.......#.#..........#..#...............#....#....#.............#...
+.......................##.#.#..##........#....#.........#.#.#.....##..............#.......#.......##.#..........#.#................
+.....#..#..................#..##....#.......#.............#...#.....#.............#.............#.#...............#.....##......##.
+...#.#.....#..........#.#............#..#..........................##.............#....#.......#.#...#...#....................#.#..
+............##.#............#....#....#....#..##...#...............................#...#...#.........#.......................##.##.
+....#.#...............#...#.......#............#..#...........................#..............#..........#....#...#...#..#...#....#.
+.......#..#..#.#..#......#..........................#...............#.........#...........#................#..#...#................
+...#..#...#.....#.#.......#....................................................#........#..........#.#...#......#..........#.......
+..#...#.......#..#..............#.#...#.....#...#....#............#..........##...#.........##.............#.......................
+...#.............#...#....#...#.....#.#.#..............#..........#........#........##...........#..#.#......................#.....
+.#.......#.................#...............#..........#.....................#.....#............#......##....#.....#...#....###.....
+...##...........#..........#.#........#............#..#.#........................#.....##............#...##.#.......#.##....#......
+...........#........#...........#.......#......#...#.....#............................#........#..#................#...#....##.....
+...##.##.........#.####..#............#..#.....#.......................#......#..........#.#..#.#....##........#....#.....#..#..##.
+...................................................................................................................................

aoc2023/day21/main.go

@@ -0,0 +1,99 @@
+package main
+
+import (
+	"bufio"
+	_ "embed"
+	"fmt"
+
+	aoc "go.sour.is/advent-of-code"
+)
+
+// var log = aoc.Log
+
+func main() { aoc.MustResult(aoc.Runner(runner(64))) }
+
+type result struct {
+	valuePT1 int
+	valuePT2 int
+}
+
+func (r result) String() string { return fmt.Sprintf("%#v", r) }
+
+func runner(rounds int) func(scan *bufio.Scanner) (*result, error) {
+	return func(scan *bufio.Scanner) (*result, error) {
+		var garden garden
+
+		for scan.Scan() {
+			txt := scan.Text()
+			garden.m = append(garden.m, []rune(txt))
+
+			for i, c := range txt {
+				if c == 'S' {
+					garden.start[0] = len(garden.m) - 1
+					garden.start[1] = i
+				}
+			}
+		}
+		garden.Step(rounds)
+		return &result{
+			valuePT1: len(garden.steps[len(garden.steps)-1]),
+		}, nil
+	}
+}
+
+type garden struct {
+	start aoc.Point[int]
+	m     [][]rune
+	steps []aoc.Set[aoc.Point[int]]
+}
+
+func (g *garden) Neighbors(p aoc.Point[int]) []aoc.Point[int] {
+	var neighbors []aoc.Point[int]
+	for _, n := range []aoc.Point[int]{
+		{p[0] - 1, p[1]},
+		{p[0] + 1, p[1]},
+		{p[0], p[1] - 1},
+		{p[0], p[1] + 1},
+	} {
+		if n[0] >= 0 && n[0] < len(g.m) && n[1] >= 0 && n[1] < len(g.m[0]) && g.m[n[0]][n[1]] != '#' {
+			neighbors = append(neighbors, n)
+		}
+	}
+	return neighbors
+}
+
+func (g *garden) Step(n int) {
+	if len(g.steps) == 0 {
+		g.steps = append(g.steps, aoc.NewSet(g.start))
+	}
+
+	for step := range(n) {
+		g.steps = append(g.steps, aoc.NewSet[aoc.Point[int]]())
+		for p := range g.steps[step] {
+			for _, n := range g.Neighbors(p) {
+				g.steps[step+1].Add(n)
+			}
+		}
+	}
+}
+
+func (g garden) String() string {
+	var b []rune
+	for i, line := range g.m {
+		if i == g.start[0] {
+			line[g.start[1]] = 'X'
+		}
+
+		if steps := len(g.steps) - 1; steps > 0 {	
+			for p := range g.steps[len(g.steps)-1] {
+				if p[0] == i {
+					line[p[1]] = 'O'
+				}
+			}
+		}
+
+		b = append(b, line...)
+		b = append(b, '\n')
+	}
+	return string(b)
+}

aoc2023/day21/main_test.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"testing"
+
+	_ "embed"
+
+	"github.com/matryer/is"
+)
+
+//go:embed example.txt
+var example []byte
+
+//go:embed input.txt
+var input []byte
+
+func TestExample(t *testing.T) {
+	is := is.New(t)
+	scan := bufio.NewScanner(bytes.NewReader(example))
+
+	result, err := runner(6)(scan)
+	is.NoErr(err)
+
+	t.Log(result)
+	is.Equal(result.valuePT1, 16)
+	is.Equal(result.valuePT2, 0)
+}
+
+func TestSolution(t *testing.T) {
+	is := is.New(t)
+	scan := bufio.NewScanner(bytes.NewReader(input))
+
+	result, err := runner(64)(scan)
+	is.NoErr(err)
+
+	t.Log(result)
+	is.Equal(result.valuePT1, 3709)
+	is.Equal(result.valuePT2, 0)
+}

aoc2023/day25/example.txt

@@ -0,0 +1,13 @@
+jqt: rhn xhk nvd
+rsh: frs pzl lsr
+xhk: hfx
+cmg: qnr nvd lhk bvb
+rhn: xhk bvb hfx
+bvb: xhk hfx
+pzl: lsr hfx nvd
+qnr: nvd
+ntq: jqt hfx bvb xhk
+nvd: lhk
+lsr: lhk
+rzs: qnr cmg lsr rsh
+frs: qnr lhk lsr

aoc2023/day25/main.go

@@ -0,0 +1,63 @@
+package main
+
+import (
+	"bufio"
+	_ "embed"
+	"fmt"
+	"iter"
+	"strings"
+
+	aoc "go.sour.is/advent-of-code"
+)
+
+// var log = aoc.Log
+
+func main() { aoc.MustResult(aoc.Runner(run)) }
+
+type result struct {
+	valuePT1 int
+	valuePT2 int
+}
+
+func (r result) String() string { return fmt.Sprintf("%#v", r) }
+
+func run(scan *bufio.Scanner) (*result, error) {
+	g := aoc.Graph[string, int]()
+	var root string
+
+	for scan.Scan() {
+		line := scan.Text()
+		v, lis, ok := strings.Cut(line, ": ")
+		if !ok {
+			continue
+		}
+
+		if root == "" {
+			root = v
+		}	
+
+		for _, l := range strings.Split(lis, " ") {
+			g.AddEdge(v, l, 1)
+			g.AddEdge(l, v, 1)
+
+		}
+	}
+
+	for i, v := range enumerate(g.BFS(root)) {
+		fmt.Println(i, v)
+	}
+
+	return &result{}, nil
+}
+
+func enumerate[T any](vs iter.Seq[T]) iter.Seq2[int, T] {
+	i := 0
+	return func(yield func(int, T) bool) {
+		for v := range vs {
+			if !yield(i, v) {
+				return
+			}
+			i++
+		}
+	}
+}	

aoc2023/day25/main_test.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"testing"
+
+	_ "embed"
+
+	"github.com/matryer/is"
+)
+
+//go:embed example.txt
+var example []byte
+
+//go:embed input.txt
+var input []byte
+
+func TestExample(t *testing.T) {
+	is := is.New(t)
+	scan := bufio.NewScanner(bytes.NewReader(example))
+
+	result, err := run(scan)
+	is.NoErr(err)
+
+	t.Log(result)
+	is.Equal(result.valuePT1, 50)
+	is.Equal(result.valuePT2, 0)
+}
+
+func TestSolution(t *testing.T) {
+	is := is.New(t)
+	scan := bufio.NewScanner(bytes.NewReader(input))
+
+	result, err := run(scan)
+	is.NoErr(err)
+
+	t.Log(result)
+	is.Equal(result.valuePT1, 0)
+	is.Equal(result.valuePT2, 0)
+}

aoc2024/day01/example.txt

@@ -0,0 +1,6 @@
+3   4
+4   3
+2   5
+1   3
+3   9
+3   3

aoc2024/day01/main.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"bufio"
+	_ "embed"
+	"fmt"
+	"iter"
+	"slices"
+	"sort"
+
+	aoc "go.sour.is/advent-of-code"
+)
+
+// var log = aoc.Log
+
+func main() { aoc.MustResult(aoc.Runner(run)) }
+
+type result struct {
+	valuePT1 int
+	valuePT2 int
+}
+
+func (r result) String() string { return fmt.Sprintf("%#v", r) }
+
+func run(scan *bufio.Scanner) (*result, error) {
+	var (
+		left  []int
+		right []int
+	)
+
+	for scan.Scan() {
+		txt := scan.Text()
+
+		var l, r int
+		_, err := fmt.Sscanf(txt, "%d %d", &l, &r)
+		if err != nil {
+			return nil, err
+		}
+
+		left = append(left, l)
+		right = append(right, r)
+	}
+
+	sort.Ints(left)
+	sort.Ints(right)
+
+	result := &result{}
+
+	result.valuePT1 = aoc.Reduce(func(i int, z pair[int, int], sum int) int {
+		return sum + aoc.ABS(z.L-z.R)
+	}, 0, zip(slices.Values(left), slices.Values(right)))
+
+	rmap := aoc.Reduce(func(i int, z int, m map[int]int) map[int]int {
+		m[z]++
+		return m
+	}, make(map[int]int), slices.Values(right))
+	
+	for _, v := range left {
+		if r, ok := rmap[v]; ok {	
+			result.valuePT2 += v*r
+		}
+	}
+
+	return result, nil
+}
+
+type pair[L, R any] struct {
+	L L
+	R R
+}
+
+func zip[L, R any](l iter.Seq[L], r iter.Seq[R]) iter.Seq[pair[L,R]] {
+	return func(yield func(pair[L, R]) bool) {
+		pullR, stop := iter.Pull(r)
+		defer stop()
+
+		for l := range l {
+			r, _ := pullR()
+
+			if !yield(pair[L, R]{L: l, R: r}) {
+				return
+			}
+		}
+	}
+}
+