add timings

main.java.tmpl

@@ -1,12 +1,19 @@
 package src;
 
 import java.io.FileReader;
+import java.time.Duration;
+import java.time.Instant;
 import java.util.Scanner;
 
 public class Day00 {
     public static void main(String[] args) {
+        Instant start = Instant.now();
         part1();
+        Instant middle = Instant.now();
         part2();
+        Instant end = Instant.now();
+        IO.println("part 1: " + Duration.between(start, middle).toMillis() + " ms");
+        IO.println("part 2: " + Duration.between(middle, end).toMillis() + " ms");
     }
 
     private static void part1() {