day5: add timing

5/src/main.rs

@@ -1,9 +1,9 @@
 use std::fs::File;
 use std::io::{BufRead, BufReader, Lines};
 use std::ops::Range;
+use std::time::Instant;
 
 use itertools::Itertools;
-use rayon::prelude::*;
 
 // --- Day 5: If You Give A Seed A Fertilizer ---
 
@@ -138,8 +138,15 @@ fn get_input() -> InputIter {
 }
 
 fn main() {
-    println!("Problem 1 solution: {}", problem1(get_input()));
-    println!("Problem 2 solution: {}", problem2(get_input()));
+    let start = Instant::now();
+    let ans1 = problem1(get_input());
+    let duration = start.elapsed();
+    println!("Problem 1 solution: {} [{}s]", ans1, duration.as_secs_f64());
+
+    let start = Instant::now();
+    let ans2 = problem2(get_input());
+    let duration = start.elapsed();
+    println!("Problem 2 solution: {} [{}s]", ans2, duration.as_secs_f64());
 }
 
 // PARSING