diff --git a/.aoc_tiles/tiles/2024/16.png b/.aoc_tiles/tiles/2024/16.png
index f5551a1..2e96a98 100644
Binary files a/.aoc_tiles/tiles/2024/16.png and b/.aoc_tiles/tiles/2024/16.png differ
diff --git a/README.md b/README.md
index 39e18b5..96eb4aa 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 <!-- AOC TILES BEGIN -->
 <h1 align="center">
-  2024 - 31 ⭐ - Rust
+  2024 - 32 ⭐ - Rust
 </h1>
 <a href="src/day1.rs">
   <img src=".aoc_tiles/tiles/2024/01.png" width="161px">
diff --git a/utils/grid/lib.rs b/utils/grid/lib.rs
index dab4207..596268e 100644
--- a/utils/grid/lib.rs
+++ b/utils/grid/lib.rs
@@ -181,6 +181,12 @@ impl<T: Clone + Eq + PartialEq + Debug> Grid<T> {
             None => None,
         }
     }
+    pub fn get_mut<C: AsCoord2d>(&mut self, c: &C) -> Option<&mut T> {
+        match self.valid_pos(c) {
+            Some(pos) => Some(self.data.get_mut(pos).unwrap()),
+            None => None,
+        }
+    }
     pub fn set<C: AsCoord2d>(&mut self, c: &C, mut val: T) -> Option<T> {
         match self.valid_pos(c) {
             Some(pos) => {