init

day2/src/main.rs

@@ -0,0 +1,28 @@
+use std::fs::read_to_string;
+use std::collections::HashMap;
+use regex::Regex;
+
+fn main() {
+    let re = Regex::new("([0-9]+) (red|green|blue)([,;])?").unwrap();
+    let mut current_id = 1;
+    let bag: HashMap<&str, i32> = HashMap::from([
+        ("red", 12), ("green", 13), ("blue", 14)
+    ]);
+    let mut sum = 0;
+    for line in read_to_string("input.txt").unwrap().lines() {
+        let mut possible = true;
+        for captures in re.captures_iter(line) {
+            let amount = captures[1].parse::<i32>().unwrap();
+            let color = &captures[2];
+            if amount > bag[color] {
+                possible = false;
+                break;
+            }
+        }
+        if possible {
+            sum += current_id;
+        }
+        current_id += 1;
+    }
+    println!("Sum: {}", sum);
+}