day 2 part 2

src/main.rs

@@ -3,37 +3,28 @@ use fancy_regex::Regex;
 use std::{collections::HashMap, io::stdin};
 
 fn main() -> Result<()> {
-    // let input = File::open("input.txt")?;
-    // let reader = BufReader::new(input);
-
     let game_re = Regex::new(r"Game (\d+): (.+)")?;
     let cube_re = Regex::new(r"(\d+) (blue|red|green)")?;
-    let max_colors = HashMap::from([("red", 12), ("green", 13), ("blue", 14)]);
 
     let mut sum = 0;
     for line in stdin().lines() {
         let line = line?;
         let c = game_re.captures(&line)?.unwrap();
-        let game_number: i32 = c.get(1).unwrap().as_str().parse()?;
         let desc = c.get(2).unwrap().as_str();
-        println!("game={game_number}");
 
-        let mut valid = true;
+        let mut max_colors = HashMap::from([("red", 0), ("green", 0), ("blue", 0)]);
         for round in desc.split(';') {
             for cube in cube_re.captures_iter(round) {
                 let cube = cube?;
                 let count: i32 = cube.get(1).unwrap().as_str().parse()?;
                 let color = cube.get(2).unwrap().as_str();
-                println!("count={count} color={color}");
 
-                if count > *max_colors.get(&color).unwrap() {
-                    valid = false;
-                }
+                let n = max_colors.get(&color).unwrap();
+                max_colors.insert(color, i32::max(*n, count));
             }
         }
-        if valid {
-            sum += game_number;
-        }
+        let power: i32 = max_colors.values().product();
+        sum += power;
     }
 
     println!("{sum}");