Merge pull request 'feat: add day 6 2024' (#24) from day6 into main

Reviewed-on: #24

.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/day07/main.go

@@ -16,7 +16,7 @@ type result struct {
 }
 
 func run(scan *bufio.Scanner) (result, error) {
-	var game1, game2 Game
+	var game Game
 
 	for scan.Scan() {
 		var cards string
@@ -27,18 +27,15 @@ func run(scan *bufio.Scanner) (result, error) {
 		}
 
 		fmt.Println("cards", cards, "bid", bid)
-		game1.Append(cards, bid)
-		game2.Append(cards, bid)
+		game.plays = append(game.plays, Play{bid, []rune(cards), &game})
 	}
 
-	game1.cardTypes = cardTypes1
-	game1.cardOrder = getOrder(cardTypes1)
-	product1 := calcProduct(game1)
+	game.cardOrder = getOrder(cardTypes1)
+	product1 := calcProduct(game)
 
-	game2.cardTypes = cardTypes2
-	game2.cardOrder = getOrder(cardTypes2)
-	game2.wildCard = 'J'
-	product2 := calcProduct(game2)
+	game.cardOrder = getOrder(cardTypes2)
+	game.wildCard = 'J'
+	product2 := calcProduct(game)
 
 	return result{product1, product2}, nil
 }
@@ -69,108 +66,92 @@ func getOrder(cardTypes []rune) map[rune]int {
 type Game struct {
 	plays     Plays
 	cardOrder map[rune]int
-
-	cardTypes []rune
 	wildCard  rune
 }
 
-func (g *Game) Append(cards string, bid int) {
-	p := Play{bid: bid, hand: []rune(cards), game: g}
-	g.plays = append(g.plays, p)
-}
-
 type Play struct {
 	bid  int
 	hand Hand
-	cardCounts map[rune]int
-    strength int
-
 	game *Game
 }
 
 type Hand []rune
 
-func (h *Play) HandType() string {
-	hs := h.HandStrength()
-	kind := hs& 0xf00000
-	hc := h.game.cardTypes[13-hs&0xf0000>>16]
-	switch kind {
-	case 0x700000:
+func (h Play) HandType() string {
+	hc, _ := h.HighCard()
+	switch {
+	case h.IsFiveOfKind():
 		return "5K-" + string(hc)
-	case 0x600000:
+	case h.IsFourOfKind():
 		return "4K-" + string(hc)
-	case 0x500000:
+	case h.IsFullHouse():
 		return "FH-" + string(hc)
-	case 0x400000:
+	case h.IsThreeOfKind():
 		return "3K-" + string(hc)
-	case 0x300000:
+	case h.IsTwoPair():
 		return "2P-" + string(hc)
-	case 0x200000:
+	case h.IsOnePair():
 		return "1P-" + string(hc)
-	case 0x100000:
+	case h.IsHighCard():
 		return "HC-" + string(hc)
 	}
 	return "Uno"
 }
 
-func (p *Play) HandStrength() int {
-	_, v := p.HighCard()
-
+func (h Play) HandStrength() int {
+	_, v := h.HighCard()
 	switch {
-	case p.IsFiveOfKind():
-		p.strength = 0x700000 | v
-	case p.IsFourOfKind():
-		p.strength = 0x600000 | v
-	case p.IsFullHouse():
-		p.strength = 0x500000 | v
-	case p.IsThreeOfKind():
-		p.strength = 0x400000 | v
-	case p.IsTwoPair():
-		p.strength = 0x300000 | v
-	case p.IsOnePair():
-		p.strength = 0x200000 | v
-	case p.IsHighCard():
-		p.strength = 0x100000 | v
+	case h.IsFiveOfKind():
+		return 0x700000 | v
+	case h.IsFourOfKind():
+		return 0x600000 | v
+	case h.IsFullHouse():
+		return 0x500000 | v
+	case h.IsThreeOfKind():
+		return 0x400000 | v
+	case h.IsTwoPair():
+		return 0x300000 | v
+	case h.IsOnePair():
+		return 0x200000 | v
+	case h.IsHighCard():
+		return 0x100000 | v
 	}
-	return p.strength
+	return 0
 }
 
 func (h Play) IsFiveOfKind() bool {
-	_, _, _, _, has5 := h.game.hasSame(h.cardCounts)
+	_, _, _, _, has5 := h.game.hasSame(h.hand)
 	return has5
 }
 func (h Play) IsFourOfKind() bool {
-	_, _, _, has4, _ := h.game.hasSame(h.cardCounts)
+	_, _, _, has4, _ := h.game.hasSame(h.hand)
 	return has4
 }
 func (h Play) IsFullHouse() bool {
-	_, has2, has3, _, _ := h.game.hasSame(h.cardCounts)
+	_, has2, has3, _, _ := h.game.hasSame(h.hand)
 	return has3 && has2
 }
 func (h Play) IsThreeOfKind() bool {
-	has1, _, has3, _, _ := h.game.hasSame(h.cardCounts)
+	has1, _, has3, _, _ := h.game.hasSame(h.hand)
 	return has3 && has1
 }
 func (h Play) IsTwoPair() bool {
-	_, has2, has3, _, _ := h.game.hasSame(h.cardCounts)
-	return !has3 && has2 && h.game.pairs(h.cardCounts) == 2
+	_, has2, has3, _, _ := h.game.hasSame(h.hand)
+	return !has3 && has2 && h.game.pairs(h.hand) == 2
 }
 func (h Play) IsOnePair() bool {
-	_, has2, has3, _, _ := h.game.hasSame(h.cardCounts)
-	return !has3 && has2 && h.game.pairs(h.cardCounts) == 1
+	_, has2, has3, _, _ := h.game.hasSame(h.hand)
+	return !has3 && has2 && h.game.pairs(h.hand) == 1
 }
 func (h Play) IsHighCard() bool {
-	has1, has2, has3, has4, _ := h.game.hasSame(h.cardCounts)
+	has1, has2, has3, has4, _ := h.game.hasSame(h.hand)
 	return has1 && !has2 && !has3 && !has4
 }
-func (h *Play) HighCard() (rune, int) {
-	if h.cardCounts == nil {
-		h.generateCounts()
-	}
-	
+func (h Play) HighCard() (rune, int) {
 	var i int
 	pairs := make(Pairs, 5)
-	for r, c := range h.cardCounts {
+	cnt := h.game.Counts(h.hand)
+	for r, c := range cnt {
 		pairs[i].c = c
 		pairs[i].r = r
 		pairs[i].o = h.game.cardOrder[r]
@@ -213,32 +194,29 @@ func (p Plays) Len() int           { return len(p) }
 func (p Plays) Less(i, j int) bool { return p[i].HandStrength() < p[j].HandStrength() }
 func (p Plays) Swap(i, j int)      { p[i], p[j] = p[j], p[i] }
 
-func (p *Play) generateCounts() {
-	cardOrder := p.game.cardOrder
-	wildCard := p.game.wildCard
-
-	p.cardCounts = make(map[rune]int, len(cardOrder))
-	for _, c := range p.hand {
-		p.cardCounts[c]++
+func (g *Game) Counts(cards []rune) map[rune]int {
+	m := make(map[rune]int, len(g.cardOrder))
+	for _, c := range cards {
+		m[c]++
 	}
-
-	if wildCard != 0 && p.cardCounts[wildCard] > 0 {
+	if g.wildCard != 0 && m[g.wildCard] > 0 {
 		var maxK rune
 		var maxV int
-		for k, v := range p.cardCounts {
-			if k != wildCard && v > maxV {
+		for k, v := range m {
+			if k != g.wildCard && v > maxV {
 				maxK, maxV = k, v
 			}
 		}
-
 		if maxK != 0 {
-			p.cardCounts[maxK] += p.cardCounts[wildCard]
-			delete(p.cardCounts, wildCard)
+			m[maxK] += m[g.wildCard]
+			delete(m, g.wildCard)
 		}
 	}
+	return m
 }
-func (g *Game) hasSame(counts map[rune]int) (has1, has2, has3, has4, has5 bool) {
-	for _, c := range counts {
+func (g *Game) hasSame(cards []rune) (has1, has2, has3, has4, has5 bool) {
+	cnt := g.Counts(cards)
+	for _, c := range cnt {
 		switch c {
 		case 1:
 			has1 = true
@@ -258,9 +236,9 @@ func (g *Game) hasSame(counts map[rune]int) (has1, has2, has3, has4, has5 bool)
 	}
 	return
 }
-func (g *Game) pairs(counts map[rune]int) int {
+func (g *Game) pairs(cards []rune) int {
 	pairs := 0
-	for _, n := range counts {
+	for _, n := range g.Counts(cards) {
 		if n == 2 {
 			pairs++
 		}

aoc2023/day07/main_test.go

@@ -26,21 +26,18 @@ func TestHands(t *testing.T) {
 	var game Game
 	game.cardOrder = getOrder(cardTypes1)
 
-	h := Play{hand: []rune("AAA23"), game: &game}
-	// h.generateCounts()
+	h := Play{0, []rune("AAA23"), &game}
 	is.Equal(h.HandType(), "3K-A")
 
-	h = Play{hand: []rune("JJJJJ"), game:&game}
-	h.generateCounts()
-
+	h = Play{0, []rune("JJJJJ"), &game}
 	is.Equal(h.HandType(), "5K-J")
 	is.Equal(fmt.Sprintf("%x", h.HandStrength()), "7aaaaa")
 
-	h = Play{hand: []rune("KKKKJ"), game: &game}
+	h = Play{0, []rune("KKKKJ"), &game}
 	is.Equal(h.HandType(), "4K-K")
 	is.Equal(fmt.Sprintf("%x", h.HandStrength()), "6cccca")
 
-	h = Play{hand: []rune("QQQJA"), game: &game}
+	h = Play{0, []rune("QQQJA"), &game}
 	is.Equal(h.HandType(), "3K-Q")
 	is.Equal(fmt.Sprintf("%x", h.HandStrength()), "4bbbad")
 }

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

@@ -43,4 +43,3 @@ func TestSolution(t *testing.T) {
 	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
 

aoc2023/day17/example.txt

@@ -0,0 +1,13 @@
+2413432311323
+3215453535623
+3255245654254
+3446585845452
+4546657867536
+1438598798454
+4457876987766
+3637877979653
+4654967986887
+4564679986453
+1224686865563
+2546548887735
+4322674655533

aoc2023/day17/input.txt

@@ -0,0 +1,141 @@
+222343122415245553243251316124223234134666332224124211645376775672443247264263475261513546522316162532215534453661231232515522214351143451211
+422125443253354142511545636246664666565355152246453231651172747635424163415626462753445445312334225221624336126244661514234445544425223533122
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+435153335153513534132112326653656626231351436457153446433363235565156156723233715473535244413451723176561153261562445512312413413513135513241
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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/day17/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, 102)
+	is.Equal(result.valuePT2, 94)
+}
+
+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, 843)
+	is.Equal(result.valuePT2, 1017)
+}

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)
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+L 5 (#647600)
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+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)
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+U 3 (#1cdc41)
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+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)
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+D 3 (#30d2d3)
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+D 5 (#8a0da3)
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+D 2 (#68f1c1)
+R 5 (#02f782)
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+R 11 (#448e32)
+D 5 (#2cfac1)
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+U 3 (#076e31)
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+D 3 (#5a5c43)
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+D 3 (#5069e3)
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+R 4 (#66ca10)
+U 4 (#1418f1)
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+D 4 (#1418f3)
+R 8 (#66d4f0)
+D 5 (#3c5533)
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+D 3 (#2cf5e3)
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+D 7 (#2cf5e1)
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+D 3 (#4f9d63)
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+U 3 (#915863)
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+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}
+pm{x>3659:A,m<3539:R,A}
+hj{a>3260:hrn,A}
+ds{m>767:A,m>718:A,R}
+ccv{a<2781:R,a<2905:hd,s<1781:A,qdk}
+vh{s<2473:lpg,m>643:cmn,s>2647:vkk,ht}
+zld{x<3737:A,xst}
+djf{x<748:R,R}
+jfx{m>1768:gz,m>802:jfs,m<437:cl,snl}
+vft{x<2121:dn,m<2486:kf,x<2180:qmt,vsj}
+bc{m<369:hs,a<2050:dfd,m>584:mx,vqt}
+dn{a<799:vbr,m<1868:A,s<1387:skb,rs}
+kxl{a<1795:A,s>3664:A,s<3514:R,R}
+bh{x>3971:A,R}
+pv{x>1877:R,s<517:R,m>2313:R,A}
+vzj{s<1879:cth,vc}
+fc{a<2156:ths,zbc}
+cs{a>2745:A,x>2067:A,s>2357:R,A}
+nsj{a>2800:A,m<2010:R,R}
+lsb{a>2810:R,x>2463:A,m>2877:R,bz}
+nl{x<2336:A,x>2529:A,A}
+pk{m<2800:A,s>3027:R,x<487:A,A}
+bzn{m<1838:R,A}
+qrt{s>1765:R,s>1529:A,s>1302:zdc,kzp}
+srn{m<3131:zbr,a>3269:phc,x<2610:R,xd}
+lz{m<1282:pzk,s>1085:gld,A}
+spb{x<3144:krj,sx}
+mqz{m>467:sm,m<282:R,s<969:hhs,jfp}
+mff{s<632:A,x>625:R,dzt}
+hgt{m<2577:A,s<3667:A,s>3805:R,R}
+xpv{a<3077:R,R}
+rf{m>3497:gv,a>334:vhk,A}
+rsc{s>1811:A,jk}
+vkl{a>1095:A,a<912:R,R}
+mpn{a>3161:pdk,x>3461:zld,ff}
+pzk{s>1180:R,m>1114:R,x>299:A,R}
+vf{x<492:R,s<3334:R,R}
+kjv{m<719:bc,vhc}
+ks{m>2088:kxl,a>1906:ll,gq}
+vm{m>1632:vb,qcr}
+ph{a<2292:qzf,A}
+xn{x<2461:qln,R}
+px{a<1762:xg,x>3186:jfx,fc}
+fzz{x<3174:mq,a>1103:nn,m<533:bgn,mdq}
+xl{x>116:lmr,m<712:nvq,a>2807:jmf,R}
+br{s>958:xxt,x<537:bnn,a<1228:R,ssr}
+mcl{x>3441:R,s<2530:R,R}
+gn{a<3598:R,a>3777:A,x>861:A,R}
+scg{a>3029:A,s>3661:A,R}
+kr{m<471:R,hz}
+xfc{s>3354:R,R}
+th{a>1860:vf,a>789:pk,mt}
+nm{s<2242:A,x>3062:kz,R}
+xp{m<2732:R,a<441:R,A}
+fzh{a>101:A,x>3191:R,A}
+bn{x<3725:R,a>499:R,R}
+kmh{s>1727:A,a>1678:A,a<1550:A,A}
+dj{m<2927:R,m>3578:A,x>1056:R,A}
+jz{x>3123:A,a>3678:A,x>2902:R,R}
+qq{m<3557:A,m>3852:A,a<1950:R,A}
+nrv{m>1238:qcd,mqz}
+pmd{x>3502:R,gdl}
+ll{s>3570:A,s<3419:R,x>946:A,R}
+td{x<1875:A,a>1161:A,A}
+jt{m>1937:A,s<430:tkv,R}
+pp{s<1233:mzr,m>2932:vsl,ccv}
+ssr{s<903:R,R}
+qcd{m>1677:R,R}
+sv{x<3042:fv,s<3775:tc,m<3706:ct,dm}
+qsg{x>3287:vvt,dbq}
+cdt{x<3342:kx,a>1677:btj,nth}
+jrl{m>1242:A,m>940:R,m<793:R,R}
+dzt{s<732:A,A}
+dk{m>1342:rmq,hdt}
+rn{x<3645:A,R}
+fx{s>1211:jpn,s>785:nrv,m<1357:pd,dcg}
+nvh{a<2086:kmh,x<2940:A,m<2730:R,pms}
+cb{x<581:sd,psf}
+mq{m>678:A,x>2970:qf,a<881:A,ck}
+qfn{s>298:A,R}
+rss{s>1618:rsl,frj}
+sp{x<3759:R,a>512:A,m>3807:R,R}
+dns{m>270:A,x<2335:R,s>3567:R,R}
+dsr{x<2503:R,m>969:A,x>3358:R,A}
+jfs{s>3760:R,R}
+zpq{x<2139:td,s>2466:nl,A}
+vk{s<2893:A,a<803:A,s>2986:R,A}
+rbn{a>3902:zp,m>472:A,R}
+tvn{m<2544:R,A}
+lqf{a<3601:rnx,a<3691:A,fz}
+ls{m<1384:A,R}
+rnk{a>3786:R,m<2367:A,zl}
+pdk{x>3398:R,s>2636:tnq,a>3510:xt,km}
+gm{x>1475:sg,zdv}
+ps{s>2886:A,A}
+ndh{a<979:fkj,a>1636:A,s>2743:tz,nf}
+zhs{s>2501:R,a<3309:A,s>2306:A,R}
+zht{a>1418:A,A}
+fn{x>3198:A,a>3957:R,m>3278:A,A}
+xc{m>1714:xfc,a>2574:cmr,A}
+gld{m<1414:R,x<381:A,m<1444:A,R}
+pz{m>3006:R,A}
+fkp{a>3424:R,m<3526:A,A}
+fqc{a<2473:tv,m>2350:cj,a<2565:xs,vv}
+bnt{s>1011:R,x>3453:A,R}
+xzq{a<3766:lqf,a<3888:kgd,s<1399:zmt,lp}
+clh{a<1003:A,s>3818:A,ntv}
+rq{s>2799:R,m<1088:A,A}
+jfp{s<1113:A,R}
+hh{x<466:A,R}
+md{s>1194:R,R}
+hm{a>1759:gsb,R}
+vb{s>1454:A,s<1082:kxs,a>1134:A,hc}
+rsl{a<3803:gh,st}
+tjb{x>2545:A,x>1949:A,R}
+zsp{s<3356:R,A}
+bg{x>1362:A,R}
+lbf{m>1460:A,mnr}
+bt{s<856:R,s>1189:ppc,x>2845:R,R}
+ct{a<1119:A,x>3291:A,m<3487:A,A}
+drn{s>2455:R,x>3658:A,x>3401:R,A}
+xst{m>2109:R,a>2952:A,a<2839:R,R}
+pr{a>3195:xxm,R}
+rnx{s<926:A,a>3544:R,A}
+ngl{a<2849:kzb,x>1007:R,vq}
+fhq{m<1694:R,m>3210:A,a>1513:A,A}
+ttd{x>952:R,m>216:R,m>132:R,A}
+tg{a>447:R,m<3009:R,s<3685:R,A}
+cgl{x>2271:A,s>3239:R,s<2541:cs,A}
+jh{a>3871:R,s<2611:A,R}
+vlx{m>2576:A,a<3152:R,m>1231:A,R}
+fh{s>1137:R,s<937:R,djf}
+xz{x<2419:sl,x<3456:rt,m>3040:fs,crn}
+pj{a<887:sq,s<3315:A,R}
+kjt{m<990:hqc,nkr}
+tb{m>1009:A,A}
+ppm{a<1310:R,a<1850:R,a<2261:R,R}
+jm{x<1054:R,a<579:R,A}
+fsf{x<3020:R,R}
+xxm{a<3299:R,R}
+pvh{s>929:A,R}
+bfx{a<3017:A,a>3351:gn,grz}
+fp{x<2966:tbv,x<3308:R,R}
+krr{x<677:tvn,A}
+vdz{m<3388:R,x<844:A,R}
+hzf{s>385:R,s<196:A,A}
+jjf{x>3217:A,m<616:qfn,dr}
+nq{x>2432:lg,m<1705:A,R}
+cmn{a<3539:rtg,a>3754:sf,dv}
+sq{a>365:R,m>2615:A,s>3324:A,A}
+xqf{x<554:A,m>1924:A,x>1244:A,R}
+gxc{a<350:A,s>506:fhg,vl}
+qx{a<3727:A,R}
+nzq{m<1027:R,s>1843:R,A}
+rv{a<3212:R,x>3734:R,m>3888:tq,tn}
+lrn{m>1353:kq,s<3039:jv,gx}
+nf{m>2662:A,x<3529:A,m>2179:A,R}
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+{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.................................................................
+........#.#........#..........#.....#......#........#.#............#.#.........##...#............#...#.....#...........#.....#.....
+..................##.......#......#..#..................#..##......#.........#...#.........#............#....#...........##........
+..................#...........#.##.......#..............#....................#.#....#...##...#.....#.......#..#.....##.............
+...........#....#....##...#................................#.........#.................#....#.......................#...#..........
+.............#.#.#.....#.#...#.......#.#...........#....#.#.........#........##......#.......#.......##...#..........#.##..........
+...........##.#....#....#..#.....#...............#......................#...........#.....#...........#.#.......#..................
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+.#..................####...#.#..#.##.#...####...#......#....................#..........................#....#......................
+.....#..........#.....#.#...............#.........##...#......#.#.....#...........#.....#............##......#.....#...............
+......#........#....#..#............................###.#...##........#........#.................#..#........#...............##....
+......................#.........................##....#...#..............#..#............#.#....#......##.#......#.........##......
+..................#....#...#.#.......#..............#..#..#...#.......#...#.....#.....#...............#.#.#...............#........
+...#...##......................##..##...........#......#.............#............#...........##.......#....#......................
+.............................##...........##...#...#.....#....#.......#.#..#.....##...............#..#.#......#..............##....
+...#..#.#...#.......#..................#............#....#.#.##.#.........#......#........#..#..........#....##...........#....#...
+.....#.............................#......#.#.....#.##.#.................#.........#..#..#.#.#........................#.#.......#..
+....#........#........#....#.#.#.....#.##............###.#..........#...##......#........##...#.........#.............#........#...
+..#..............................#.............................#......#...................#...#......#.............#...............
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+......#.......##.#.............#....................#...#...........#...#..##....#.....#............#...........#........#.........
+...#....#...#......#........................#.....#.........#......#........#.....#.#...........#.#..............#......#....#.....
+........#..........#...................#...........##.#..#...#................#....##.............#................#....#..........
+........#.......#....#.............#..........#...................#.#....#.#........#..#..............................#..........#.
+............#........#....................#.#.........#......#.............#................#...#.............#....#...............
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+.##....#.............#...........##..................#...#..............#.......#................................#.........#.......
+.....#......#.#.....##...........#.....#.......#..........##..#.............#.#.........#.#.#.............##........#......#..#....
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+.........##.........#..............#.#.#....#...#.......#.................................#..##..................##.###.##...#.....
+......................#...#.#.......#..#.#..........#........#.......#.................#..................................#........
+....##........#.........#.........................#................#......#...#.....#..................................#..#.#......
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+.#.#.#....#..........#......#.#.........#.....#...............................#.....#.#............#....#........#.............#...
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+..........#........#...........#....................................#.....#...............................#............##....#.##..
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+....#...............#..........#....#...........................#....##.##...................#.#.......#...#.##....#........##..#..
+......#.....#..#..........###...#.................####.###..........#...........#..........#......#............................#...
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+................##...................#.##..............#...#..#.......#.......###........#..#..#........#...##.....................
+..............#....#..#..#.............##..............#................................#.....#..#....###.##..............#........
+..#..............#........................................#..........#.....#..................#............#..#....................
+.........#...#.....#...#...##...........#.###............##...#........#......................##......#....#.......#...............
+....#....#.....#.......#......................................#.#.#....#..#..#..........#...................#........#...#.........
+..#..#..................#..............#...#..#.........#......#....#.#................##..........#..#................#...........
+...#...................#...........#....#...#.............##...#.......#.#..........#..#...............#....#....#.............#...
+.......................##.#.#..##........#....#.........#.#.#.....##..............#.......#.......##.#..........#.#................
+.....#..#..................#..##....#.......#.............#...#.....#.............#.............#.#...............#.....##......##.
+...#.#.....#..........#.#............#..#..........................##.............#....#.......#.#...#...#....................#.#..
+............##.#............#....#....#....#..##...#...............................#...#...#.........#.......................##.##.
+....#.#...............#...#.......#............#..#...........................#..............#..........#....#...#...#..#...#....#.
+.......#..#..#.#..#......#..........................#...............#.........#...........#................#..#...#................
+...#..#...#.....#.#.......#....................................................#........#..........#.#...#......#..........#.......
+..#...#.......#..#..............#.#...#.....#...#....#............#..........##...#.........##.............#.......................
+...#.............#...#....#...#.....#.#.#..............#..........#........#........##...........#..#.#......................#.....
+.#.......#.................#...............#..........#.....................#.....#............#......##....#.....#...#....###.....
+...##...........#..........#.#........#............#..#.#........................#.....##............#...##.#.......#.##....#......
+...........#........#...........#.......#......#...#.....#............................#........#..#................#...#....##.....
+...##.##.........#.####..#............#..#.....#.......................#......#..........#.#..#.#....##........#....#.....#..#..##.
+...................................................................................................................................

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
+			}
+		}
+	}
+}
+