Day 2

Cargo.lock

@@ -9,3 +9,11 @@ version = "0.1.0"
 [[package]]
 name = "d01t2"
 version = "0.1.0"
+
+[[package]]
+name = "d02t1"
+version = "0.1.0"
+
+[[package]]
+name = "d02t2"
+version = "0.1.0"

Cargo.toml

@@ -4,4 +4,6 @@ resolver = "2"
 members = [
     "d01t1",
     "d01t2",
+    "d02t1",
+    "d02t2",
 ]

d02t1/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "d02t1"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

d02t1/src/main.rs

@@ -0,0 +1,22 @@
+fn main() {
+    let input = include_str!("../input.txt");
+    let mut result = 0;
+    for line in input.lines() {
+        let (game_id, game_values) = line.split_once(": ").unwrap();
+        if !game_values.split("; ").any(|die_set| {
+            die_set.split(", ").any(|v| {
+                let (val, color) = v.split_once(" ").unwrap();
+                let val = val.parse::<usize>().unwrap();
+                match color {
+                    "red" => val > 12,
+                    "green" => val > 13,
+                    "blue" => val > 14,
+                    c => panic!("unknown color {c}"),
+                }
+            })
+        }) {
+            result += game_id.split_once(" ").unwrap().1.parse::<i32>().unwrap();
+        }
+    }
+    println!("d02t1: {result}");
+}

d02t2/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "d02t2"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

d02t2/src/main.rs

@@ -0,0 +1,24 @@
+fn main() {
+    let input = include_str!("../input.txt");
+    let result = input
+        .lines()
+        .map(|line| {
+            let (_game_id, game_values) = line.split_once(": ").unwrap();
+            let mut min_red = 0;
+            let mut min_green = 0;
+            let mut min_blue = 0;
+            game_values.replace(";", ",").split(", ").for_each(|v| {
+                let (val, color) = v.split_once(" ").unwrap();
+                let val = val.parse::<usize>().unwrap();
+                match color {
+                    "red" => min_red = min_red.max(val),
+                    "green" => min_green = min_green.max(val),
+                    "blue" => min_blue = min_blue.max(val),
+                    c => panic!("unknown color {c}"),
+                }
+            });
+            min_red * min_green * min_blue
+        })
+        .sum::<usize>();
+    println!("d02t2: {result}");
+}