clean up

day05/src/main.rs

@@ -14,7 +14,7 @@ fn main() {
     let (crates, instructions) = (crates.lines(), instructions.lines());
 
     let mut stacks: Vec<VecDeque<&str>> =
-        vec![VecDeque::new(); (f.lines().next().unwrap().len() / 4) + 1];
+        vec![VecDeque::new(); (f.lines().next().unwrap().len() / OFFSET) + 1];
 
     for crate_str in crates {
         for i in (1..crate_str.len()).step_by(OFFSET) {
@@ -22,7 +22,7 @@ fn main() {
                 if !crate_label.chars().next().unwrap().is_alphabetic() {
                     continue;
                 }
-                let vee = stacks.get_mut(i / 4).unwrap();
+                let vee = stacks.get_mut(i / OFFSET).unwrap();
                 vee.push_front(crate_label);
             }
         }