+++ /dev/null
-module Main(main) where
-
-import Text.Parsec
-import Text.ParserCombinators.Parsec.Number
-
-type Disk = (Int -> Bool)
-
-main :: IO ()
-main = do
- text <- readFile "data/advent15.txt"
- let disks = successfulParse $ parseIfile text
- part1 disks
- part2 disks
-
-part1 :: [Disk] -> IO ()
-part1 disks = print $ head $ filter (canFall disks) [0..]
-
-part2 :: [Disk] -> IO ()
-part2 disks = print $ head $ filter (canFall disks2) [0..]
- where disks2 = disks ++ [diskify 7 11 0]
-
-canFall :: [Disk] -> Int -> Bool
-canFall ds i = all (\d -> (d i)) ds
-
-
-instructionFile = instructionLine `endBy` newline
-instructionLine = diskify <$> (string "Disc #" *> int)
- <*> (string " has " *> int)
- <*> (string " positions; at time=0, it is at position " *> int)
- <* (string ".")
-
-diskify :: Int -> Int -> Int -> (Int -> Bool)
-diskify n size pos0 = (\i -> (size + n + pos0 + i) `mod` size == 0)
-
-parseIfile :: String -> Either ParseError [Disk]
-parseIfile input = parse instructionFile "(unknown)" input
-
-parseIline :: String -> Either ParseError Disk
-parseIline input = parse instructionLine "(unknown)" input
-
-successfulParse :: Either ParseError [a] -> [a]
-successfulParse (Left _) = []
-successfulParse (Right a) = a