From 7369fd229022aa75ea6d1959749d6a4fcff32311 Mon Sep 17 00:00:00 2001
From: Bert Peters <bert@bertptrs.nl>
Date: Sat, 15 Dec 2018 22:25:59 +0100
Subject: [PATCH] Small improvement to day 15.

---
 2018/src/day15.rs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/2018/src/day15.rs b/2018/src/day15.rs
index 9a0e492..41fba57 100644
--- a/2018/src/day15.rs
+++ b/2018/src/day15.rs
@@ -222,7 +222,9 @@ impl Solution for Day15 {
         let starting_elves = self.alive[0];
         let starting_goblins = self.alive[1];
 
-        for power in 4..=255 {
+        let mut power = 4;
+
+        loop {
             self.units = backup.clone();
             self.alive[0] = starting_elves;
             self.alive[1] = starting_goblins;
@@ -237,8 +239,11 @@ impl Solution for Day15 {
                 return self.return_score(rounds);
             }
 
+            let to_kill = 200 / power;
+            while to_kill == 200 / power {
+                power += 1;
+            }
         }
-        unreachable!()
     }
 }