2023-02

2023/02/01.go

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+package main
+
+import (
+	"embed"
+	_ "embed"
+	"fmt"
+	"github.com/dbut2/advent-of-code/pkg/sti"
+	"strings"
+
+	"github.com/dbut2/advent-of-code/pkg/test"
+	"github.com/dbut2/advent-of-code/pkg/utils"
+)
+
+//go:embed input.txt
+var input string
+
+//go:embed test*.txt
+var tests embed.FS
+
+func main() {
+	t := test.Register(tests, solve)
+	t.Expect(1, 8)
+	fmt.Println(solve(input))
+}
+
+func solve(input string) int {
+	s := utils.ParseInput(input)
+
+	total := 0
+	for i, line := range s {
+		game := strings.Split(line, ": ")
+		rolls := strings.Split(game[1], "; ")
+
+		var maxCubeCounts = make(map[string]int)
+
+		for _, roll := range rolls {
+			cubes := strings.Split(roll, ", ")
+			for _, cube := range cubes {
+				cc := strings.Split(cube, " ")
+				count := sti.Sti(cc[0])
+				color := cc[1]
+
+				lastMax, _ := maxCubeCounts[color]
+				maxCubeCounts[color] = max(lastMax, count)
+			}
+		}
+
+		//12 red cubes, 13 green cubes, and 14 blue cubes.
+
+		count, _ := maxCubeCounts["red"]
+		if count > 12 {
+			continue
+		}
+
+		count, _ = maxCubeCounts["green"]
+		if count > 13 {
+			continue
+		}
+
+		count, _ = maxCubeCounts["blue"]
+		if count > 14 {
+			continue
+		}
+
+		total += i + 1
+	}
+
+	return total
+}

2023/02/02.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"embed"
+	_ "embed"
+	"fmt"
+	"github.com/dbut2/advent-of-code/pkg/sti"
+	"strings"
+
+	"github.com/dbut2/advent-of-code/pkg/test"
+	"github.com/dbut2/advent-of-code/pkg/utils"
+)
+
+//go:embed input.txt
+var input string
+
+//go:embed test*.txt
+var tests embed.FS
+
+func main() {
+	t := test.Register(tests, solve)
+	t.Expect(2, 2286)
+	fmt.Println(solve(input))
+}
+
+func solve(input string) int {
+	s := utils.ParseInput(input)
+
+	total := 0
+	for _, line := range s {
+		game := strings.Split(line, ": ")
+		rolls := strings.Split(game[1], "; ")
+
+		var maxCubesCounts = make(map[string]int)
+
+		for _, roll := range rolls {
+			cubes := strings.Split(roll, ", ")
+			for _, cube := range cubes {
+				cc := strings.Split(cube, " ")
+				count := sti.Sti(cc[0])
+				color := cc[1]
+
+				lastMax, _ := maxCubesCounts[color]
+				maxCubesCounts[color] = max(lastMax, count)
+			}
+		}
+
+		product := 1
+		for _, count := range maxCubesCounts {
+			product *= count
+		}
+		total += product
+	}
+
+	return total
+}

2023/02/input.txt

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

2023/02/puzzle.md

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+\--- Day 2: Cube Conundrum ---
+----------
+
+You're launched high into the atmosphere! The apex of your trajectory just barely reaches the surface of a large island floating in the sky. You gently land in a fluffy pile of leaves. It's quite cold, but you don't see much snow. An Elf runs over to greet you.
+
+The Elf explains that you've arrived at *Snow Island* and apologizes for the lack of snow. He'll be happy to explain the situation, but it's a bit of a walk, so you have some time. They don't get many visitors up here; would you like to play a game in the meantime?
+
+As you walk, the Elf shows you a small bag and some cubes which are either red, green, or blue. Each time you play this game, he will hide a secret number of cubes of each color in the bag, and your goal is to figure out information about the number of cubes.
+
+To get information, once a bag has been loaded with cubes, the Elf will reach into the bag, grab a handful of random cubes, show them to you, and then put them back in the bag. He'll do this a few times per game.
+
+You play several games and record the information from each game (your puzzle input). Each game is listed with its ID number (like the `11` in `Game 11: ...`) followed by a semicolon-separated list of subsets of cubes that were revealed from the bag (like `3 red, 5 green, 4 blue`).
+
+For example, the record of a few games might look like this:
+
+```
+Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green
+
+```
+
+In game 1, three sets of cubes are revealed from the bag (and then put back again). The first set is 3 blue cubes and 4 red cubes; the second set is 1 red cube, 2 green cubes, and 6 blue cubes; the third set is only 2 green cubes.
+
+The Elf would first like to know which games would have been possible if the bag contained *only 12 red cubes, 13 green cubes, and 14 blue cubes*?
+
+In the example above, games 1, 2, and 5 would have been *possible* if the bag had been loaded with that configuration. However, game 3 would have been *impossible* because at one point the Elf showed you 20 red cubes at once; similarly, game 4 would also have been *impossible* because the Elf showed you 15 blue cubes at once. If you add up the IDs of the games that would have been possible, you get `*8*`.
+
+Determine which games would have been possible if the bag had been loaded with only 12 red cubes, 13 green cubes, and 14 blue cubes. *What is the sum of the IDs of those games?*
+
+To begin, [get your puzzle input](2/input).
+
+Answer:
+
+You can also [Shareon [Twitter](https://twitter.com/intent/tweet?text=%22Cube+Conundrum%22+%2D+Day+2+%2D+Advent+of+Code+2023&url=https%3A%2F%2Fadventofcode%2Ecom%2F2023%2Fday%2F2&related=ericwastl&hashtags=AdventOfCode) [Mastodon](javascript:void(0);)] this puzzle.

2023/02/test1.txt

@@ -0,0 +1,5 @@
+Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green

2023/02/test2.txt

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+Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green