From 56c25dfeafde1aeed8ddad43b6041b065a82bdda Mon Sep 17 00:00:00 2001
From: tomsmeding <tom.smeding@gmail.com>
Date: Sat, 2 Dec 2017 10:00:47 +0100
Subject: Start 2017!

---
 2017/1.hs | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 2017/1.hs

(limited to '2017/1.hs')

diff --git a/2017/1.hs b/2017/1.hs
new file mode 100644
index 0000000..884e00e
--- /dev/null
+++ b/2017/1.hs
@@ -0,0 +1,12 @@
+import Control.Monad
+import Data.Char
+
+main :: IO ()
+main = do
+    input <- liftM (filter isDigit) $ readFile "1.in"
+
+    print $ sum $ map (\(a,b) -> read [a] * fromEnum (a == b)) $
+        zip input (tail (cycle input))
+
+    print $ sum $ map (\(a,b) -> read [a] * fromEnum (a == b)) $
+        zip input (drop (length input `div` 2) (cycle input))
-- 
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