From 214df25b9b8692e6240c27194e71327eb900b91d Mon Sep 17 00:00:00 2001
From: Stephan Linkel <251381+norganos@users.noreply.github.com>
Date: Thu, 21 Dec 2023 13:14:24 +0100
Subject: [PATCH] bugfix: wanted to use the kotlin positive-only-mod, but
 wrongly used rem instead of mod

---
 src/main/kotlin/de/linkel/aoc/Day21.kt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/kotlin/de/linkel/aoc/Day21.kt b/src/main/kotlin/de/linkel/aoc/Day21.kt
index 0d4d3ae..1e9c9ec 100644
--- a/src/main/kotlin/de/linkel/aoc/Day21.kt
+++ b/src/main/kotlin/de/linkel/aoc/Day21.kt
@@ -76,7 +76,7 @@ class Day21: AbstractLinesAdventDay<Long>() {
                     if (it in area)
                         it !in rocks
                     else {
-                        val p = Point(it.x.rem(area.width), it.y.rem(area.height))
+                        val p = Point(it.x.mod(area.width), it.y.mod(area.height))
                         p in area && p !in rocks
                     }
                 }