Minor tweak

[advent-of-code-21.git] / advent22 / Main.hs

diff --git a/advent22/Main.hs b/advent22/Main.hs
index 3712b67459ad794f63427508863e947a1300bd1b..dc67b3f6cfc14e2826f6782ca8c2a620afa81d68 100644 (file)
--- a/advent22/Main.hs
+++ b/advent22/Main.hs
@@ -80,7 +80,9 @@ segmentSize cuboids (here, there)
   | otherwise = 0
 
 segment :: [Int] -> [(Int, Int)]
-segment evs = if null evs then [] else zip evs $ tail evs
+-- segment evs = if null evs then [] else zip evs $ tail evs
+segment [] = []
+segment evs@(_ : tevs) = zip evs tevs
 
 -- Parse the input file