correct formatting

day18/src/main.rs

@@ -22,7 +22,7 @@ fn main() {
     grid[0][99] = 1;
     grid[99][99] = 1;
 
-    part2(grid)
+    part2(grid) // 1006
 }
 
 fn part2(mut grid: Vec<Vec<i32>>) {
@@ -44,6 +44,7 @@ fn part2(mut grid: Vec<Vec<i32>>) {
         new_grid[99][0] = 1;
         new_grid[0][99] = 1;
         new_grid[99][99] = 1;
+
         std::mem::swap(&mut grid, &mut new_grid);
     }