day 11 part 2

src/main.rs

@@ -35,7 +35,7 @@ fn main() -> Result<()> {
     empty_rows.sort();
 
     let mut expanded_galaxies = HashSet::new();
-    let expansion = 2;
+    let expansion = 1_000_000;
     for (x, y) in galaxies.into_iter() {
         let Err(col) = empty_columns.binary_search(&x) else {
             bail!("x={x} found in empty columns");