Day 2

input/day2.txt

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

src/day01.rs

@@ -78,3 +78,13 @@ fn parse_digit(s: &str) -> u32 {
         _ => s.parse().unwrap(),
     }
 }
+
+mod tests {
+    use super::find_digits_part2;
+
+    #[test]
+    fn twone() {
+        assert_eq!(find_digits_part2("twone"), 21);
+        assert_eq!(find_digits_part2("8oneightakljsdf"), 88);
+    }
+}

src/day02.rs

@@ -0,0 +1,99 @@
+use std::collections::HashMap;
+
+use regex::Regex;
+
+pub fn run() {
+    let input = include_str!("../input/day2.txt");
+    // let input = r#"
+    // 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
+    //     "#;
+
+    let games = parse_games(input);
+
+    let valid_ids_sum: u32 = games
+        .iter()
+        .filter(|g| g.valid_counts(12, 13, 14))
+        .map(|g| g.id)
+        .sum();
+    dbg!(valid_ids_sum);
+
+    let min_counts_power_sum: u32 = games
+        .iter()
+        .map(|g| {
+            let (r, g, b) = g.min_counts();
+            r * g * b
+        })
+        .sum();
+    dbg!(min_counts_power_sum);
+}
+
+fn parse_games(s: &str) -> Vec<Game> {
+    let mut games = vec![];
+    for l in s.lines() {
+        let l = l.trim();
+        if l.is_empty() {
+            continue;
+        }
+        let (game_s, rest) = l.split_once(": ").unwrap();
+        let game_n: u32 = game_s
+            .strip_prefix("Game ")
+            .expect("game prefix")
+            .parse()
+            .expect("game number");
+        let mut draws = vec![];
+        for draw in rest.split(";") {
+            let drawn = draw
+                .split(", ")
+                .map(|s| {
+                    let (count, color) = s.trim().split_once(" ").unwrap();
+                    let count: u32 = count.parse().expect("count number");
+                    (color, count)
+                })
+                .collect::<HashMap<_, _>>();
+            draws.push(Draw {
+                red: *drawn.get("red").unwrap_or(&0),
+                green: *drawn.get("green").unwrap_or(&0),
+                blue: *drawn.get("blue").unwrap_or(&0),
+            });
+        }
+        games.push(Game { id: game_n, draws });
+    }
+    games
+}
+
+#[derive(Debug, Clone)]
+struct Game {
+    id: u32,
+    draws: Vec<Draw>,
+}
+
+#[derive(Debug, Copy, Clone)]
+struct Draw {
+    red: u32,
+    green: u32,
+    blue: u32,
+}
+
+impl Game {
+    fn valid_counts(&self, red: u32, green: u32, blue: u32) -> bool {
+        self.draws
+            .iter()
+            .all(|draw| draw.red <= red && draw.green <= green && draw.blue <= blue)
+    }
+
+    fn min_counts(&self) -> (u32, u32, u32) {
+        let mut red = 0u32;
+        let mut green = 0u32;
+        let mut blue = 0u32;
+        for draw in self.draws.iter() {
+            red = red.max(draw.red);
+            green = green.max(draw.green);
+            blue = blue.max(draw.blue);
+        }
+        (red, green, blue)
+    }
+}

src/main.rs

@@ -1,5 +1,9 @@
+#![allow(unused_imports)]
+#![allow(dead_code)]
+
 mod day01;
+mod day02;
 
 fn main() {
-    day01::run();
+    day02::run();
 }