Day 1, puzzle 2

src/bin/d1p2.rs

@@ -0,0 +1,15 @@
+use aoc22::day1;
+use aoc22::util;
+
+const N_ELVES: usize = 3;
+
+fn main() {
+    let elves = day1::read_elves();
+
+    let max_vals = util::max_n(elves.as_slice(), N_ELVES).unwrap();
+    println!(
+        "The {} elves with the most calories are carrying {} cal",
+        N_ELVES,
+        max_vals.iter().sum::<u32>()
+    );
+}