Better timing logs in previous days

day07/src/main.rs

@@ -5,6 +5,7 @@ extern crate maplit;
 use std::collections::{HashMap, HashSet};
 use std::fs::File;
 use std::io::{BufRead, BufReader};
+use std::time::Instant;
 
 use anyhow::{anyhow, Result};
 use regex::Regex;
@@ -125,8 +126,13 @@ fn solve_part2(input_path: &str) -> Result<u32> {
 }
 
 fn main() {
+    let mut now = Instant::now();
     println!("Part 1: {}", solve_part1(INPUT).unwrap());
+    println!("(elapsed: {:?})", now.elapsed());
+    now = Instant::now();
+    println!("");
     println!("Part 2: {}", solve_part2(INPUT).unwrap());
+    println!("(elapsed: {:?})", now.elapsed());
 }
 
 #[cfg(test)]