From 752e5c1f3443a891aae44c3290d33a9e28fb618f Mon Sep 17 00:00:00 2001
From: Amneesh Singh <natto@weirdnatto.in>
Date: Sat, 10 Dec 2022 13:42:45 +0530
Subject: [PATCH] day 10

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>
---
 README   |  1 +
 day10.hs | 40 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+)
 create mode 100644 README
 create mode 100644 day10.hs

diff --git a/README b/README
new file mode 100644
index 0000000..6f67ec1
--- /dev/null
+++ b/README
@@ -0,0 +1 @@
+My advent of code solutions for 2022. I am trying to not use String wherever possible and use Data.Text instead. That makes the programs appear bigger than they are LOC-wise.
diff --git a/day10.hs b/day10.hs
new file mode 100644
index 0000000..992d004
--- /dev/null
+++ b/day10.hs
@@ -0,0 +1,40 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE ViewPatterns #-}
+
+import Data.Text (Text)
+import qualified Data.Text as T (lines, pack, unlines, words)
+import qualified Data.Text.IO as T (putStr)
+import qualified Data.Text.Read as T (decimal, signed)
+import Lib (readFile')
+
+main :: IO ()
+main = do
+  vals <-
+    scanl1 (+)
+      . reverse
+      . foldl
+        ( \xs x ->
+            let o : n = T.words x
+                dec (T.signed T.decimal . head -> Right (m, "")) = m
+             in if o == "noop" then 0 : xs else dec n : 0 : xs
+        )
+        [1]
+      . T.lines
+      <$> readFile' "day10.in"
+  putStr "Q1: "
+  print $ q1 vals
+  putStrLn "Q2: "
+  T.putStr $ q2 vals
+
+q1 :: [Int] -> Int
+q1 v = foldr (\x xs -> xs + (v !! (x - 1) * x)) 0 [20, 60 .. 220]
+
+q2 :: [Int] -> Text
+q2 v =
+  T.unlines $
+    map
+      ( \x ->
+          T.pack $
+            map (\y -> if abs (v !! (x + y) - y) <= 1 then '#' else '.') [0 .. 39]
+      )
+      [0, 40 .. 200]