From 9f5e50173b2bca1cb02b2f0c568ef7921474ae0d Mon Sep 17 00:00:00 2001
From: mhsn <mail@mhsn.net>
Date: Mon, 2 Jun 2025 16:58:43 +0000
Subject: 2024-04 rust p1

---
 2024/04/rust/Cargo.lock  | 14 ++++++++++++++
 2024/04/rust/Cargo.toml  |  7 +++++++
 2024/04/rust/src/main.rs | 35 +++++++++++++++++++++++++++++++++++
 3 files changed, 56 insertions(+)
 create mode 100644 2024/04/rust/Cargo.lock
 create mode 100644 2024/04/rust/Cargo.toml
 create mode 100644 2024/04/rust/src/main.rs

diff --git a/2024/04/rust/Cargo.lock b/2024/04/rust/Cargo.lock
new file mode 100644
index 0000000..e0c35ba
--- /dev/null
+++ b/2024/04/rust/Cargo.lock
@@ -0,0 +1,14 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "aoc"
+version = "0.1.0"
+
+[[package]]
+name = "aoc_2024-04"
+version = "0.1.0"
+dependencies = [
+ "aoc",
+]
diff --git a/2024/04/rust/Cargo.toml b/2024/04/rust/Cargo.toml
new file mode 100644
index 0000000..49f5cf9
--- /dev/null
+++ b/2024/04/rust/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "aoc_2024-04"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+aoc = { version = "0.1.0", path = "../../../lib/rust" }
diff --git a/2024/04/rust/src/main.rs b/2024/04/rust/src/main.rs
new file mode 100644
index 0000000..fd6a715
--- /dev/null
+++ b/2024/04/rust/src/main.rs
@@ -0,0 +1,35 @@
+use aoc::Grid;
+use std::io;
+
+fn main() -> io::Result<()> {
+    let grid: Vec<Vec<char>> = io::stdin()
+        .lines()
+        .map(|line| line.unwrap().chars().collect())
+        .collect();
+    let grid = Grid::new(grid);
+
+    let silver: usize = silver(&grid);
+    let gold: u64 = 0;
+    println!("silver: {silver}");
+    println!("gold: {gold}");
+
+    return Ok(());
+}
+
+fn silver(grid: &Grid<char>) -> usize {
+    let dirs = [
+        (1, 1),
+        (1, 0),
+        (1, -1),
+        (0, 1),
+        (0, -1),
+        (-1, 1),
+        (-1, 0),
+        (-1, -1),
+    ];
+    grid.points()
+        .flat_map(|p| dirs.into_iter().map(move |dp| grid.ray(p, dp)))
+        .map(|cs| cs.zip("XMAS".chars()).all(|(&a, b)| a == b))
+        .filter(|p| *p)
+        .count()
+}
-- 
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