Day 1 cleanup

day_01/src/main.rs

@@ -1,3 +1,5 @@
+//https://adventofcode.com/2024/day/1
+
 use std::collections::HashMap;
 use std::env;
 use std::error::Error;
@@ -96,11 +98,11 @@ fn main() -> Result<(), Box<dyn Error>> {
     }
 
     println!(
-        "Difference: {}",
+        "Difference (part 1): {}",
         calculate_diff(left_list.clone(), right_list.clone())
     );
     println!(
-        "Similarity: {}",
+        "Similarity (part 2): {}",
         calculate_similarity(left_list, right_list)
     );