fix: remove leftover dbg!()

src/main.rs

@@ -10,7 +10,7 @@ mod nodes;
 
 fn main() {
     let input = match env::args().skip(1).rev().reduce(|x, a| a + &x) {
-        Some(s) => dbg!(s),
+        Some(s) => s,
         None => {
             let mut buf = String::new();
             io::stdin().read_to_string(&mut buf).unwrap();