chore: clippy + time

README.md

@@ -35,8 +35,9 @@ Solutions for [Advent of Code](https://adventofcode.com/) in [Rust](https://www.
 | [Day 7](./src/bin/07.rs) | `43.5ms` | `3.7s` |
 | [Day 8](./src/bin/08.rs) | `110.0µs` | `395.4µs` |
 | [Day 9](./src/bin/09.rs) | `897.8µs` | `549.0ms` |
+| [Day 10](./src/bin/10.rs) | `836.4µs` | `1.6ms` |
 
-**Total: 12224.23ms**
+**Total: 12226.66ms**
 <!--- benchmarking table --->
 
 ---

src/bin/10.rs

@@ -1,7 +1,5 @@
 advent_of_code::solution!(10);
 
-use std::iter::successors;
-
 #[derive(Debug, Clone, PartialOrd, Ord, PartialEq, Eq)]
 struct Pos {
     x: usize,
@@ -94,27 +92,6 @@ impl Topo {
     }
 }
 
-fn print_route(route: Vec<(Pos, u8)>, max: &Pos) {
-    println!("==========");
-    for y in 0..max.y {
-        print!("|");
-        for x in 0..max.x {
-            let mut found = false;
-            for r in &route {
-                if r.0.x == x && r.0.y == y {
-                    found = true;
-                    print!("{}", r.1);
-                }
-            }
-            if !found {
-                print!(" ");
-            }
-        }
-        println!("|");
-    }
-    println!("==========");
-}
-
 pub fn part_one(input: &str) -> Option<usize> {
     let topo = Topo::init(input).ok()?;
     let ths = topo.get_trailheads();