From 817ef2dcfb3eea6b7f3972235101c74a8753be1c Mon Sep 17 00:00:00 2001
From: Bert Peters <bert@bertptrs.nl>
Date: Mon, 11 Dec 2017 12:13:20 +0100
Subject: [PATCH] Handle edge case of sgn(x) != sgn(y)

---
 2017/day-11/solution.scala | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/2017/day-11/solution.scala b/2017/day-11/solution.scala
index a293af2..cd715c0 100644
--- a/2017/day-11/solution.scala
+++ b/2017/day-11/solution.scala
@@ -32,6 +32,10 @@ object solution {
   }
 
   def dist(x: Int, y: Int): Int = {
-    return Math.max(x, y);
+    if (x.signum == y.signum) {
+      return Math.max(x.abs, y.abs);
+    } else {
+      return x.abs + y.abs
+    }
   }
 }