From e271b0d585b02cd6416f0a0b422ef56a1f7f1434 Mon Sep 17 00:00:00 2001
From: Xiretza <xiretza@xiretza.xyz>
Date: Thu, 1 Dec 2022 19:02:20 +0100
Subject: [PATCH] 2022 day1/rust: add solution

---
 2022/day1/rust/Cargo.toml  |  8 ++++++++
 2022/day1/rust/src/main.rs | 18 ++++++++++++++++++
 Cargo.toml                 |  1 +
 3 files changed, 27 insertions(+)
 create mode 100644 2022/day1/rust/Cargo.toml
 create mode 100644 2022/day1/rust/src/main.rs

diff --git a/2022/day1/rust/Cargo.toml b/2022/day1/rust/Cargo.toml
new file mode 100644
index 0000000..60bf433
--- /dev/null
+++ b/2022/day1/rust/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "rust_2022_01"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/2022/day1/rust/src/main.rs b/2022/day1/rust/src/main.rs
new file mode 100644
index 0000000..29abb0c
--- /dev/null
+++ b/2022/day1/rust/src/main.rs
@@ -0,0 +1,18 @@
+use std::{cmp::Reverse, io::stdin};
+
+fn main() {
+    let lines: Vec<_> = stdin().lines().map(Result::unwrap).collect();
+    let mut elves: Vec<_> = lines
+        .split(|s| s.is_empty())
+        .map(|entries| {
+            entries
+                .iter()
+                .map(|c| c.parse::<u64>().unwrap())
+                .sum::<u64>()
+        })
+        .collect();
+    elves.sort_by_key(|&s| Reverse(s));
+
+    println!("{}", elves[0]);
+    println!("{}", &elves[..3].iter().sum::<u64>());
+}
diff --git a/Cargo.toml b/Cargo.toml
index f4d683f..02324d7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,4 +9,5 @@ members = [
 	"2021/day14/rust",
 	"2021/day16/rust",
 	"2021/day22/rust",
+	"2022/day1/rust",
 ]