Submission #297338
Source Code Expand
import Control.Applicative import Control.Monad import Data.List import qualified Data.IntMap as M import Text.Printf type HHMM = Int type Minute = Int type Count = Int type MinuteCountMap = M.IntMap Count type Period = (Minute, Minute) readPeriod :: String -> Period readPeriod s = ((toMinute . read . take 4) s, (toMinute . read . drop 5) s) showPeriod :: Period -> String showPeriod (st, en) = printf "%04d-%04d" (toHHMM st) (toHHMM en) toMinute :: HHMM -> Minute toMinute x = (h * 60) + m where h = x `div` 100 m = x - (h * 100) toHHMM :: Minute -> HHMM toHHMM x = (h * 100) + m where h = x `div` 60 m = x - (h * 60) main :: IO () main = do num <- getNumber ps <- getPeriods num let ps' = merge $ roundPeriod <$> ps mapM_ putStrLn (Prelude.map showPeriod ps') getNumber :: IO Int getNumber = read <$> getLine getPeriods :: Int -> IO [Period] getPeriods num = do replicateM num (readPeriod <$> getLine) roundPeriod :: Period -> Period roundPeriod (st, en) = ((st `div` 5) * 5, ((en + 4) `div` 5) * 5) merge :: [Period] -> [Period] merge ps = ps' where cm = foldl' addPeriodToCountMap M.empty ps (ps', _, _) = M.foldrWithKey' cumsum ([], 0, 0) cm addPeriodToCountMap :: MinuteCountMap -> Period -> MinuteCountMap addPeriodToCountMap m (st, en) = addToCountMap en (-1) (addToCountMap st 1 m) addToCountMap :: Minute -> Count -> MinuteCountMap -> MinuteCountMap addToCountMap mi c m = case M.lookup mi m of Nothing -> M.insert mi c m Just c' -> case c'' of 0 -> M.delete mi m _ -> M.insert mi c'' m where c'' = c + c' cumsum :: Minute -> Count -> ([Period], Count, Minute) -> ([Period], Count, Minute) cumsum mi c (ps, ac, en) = case ac' of 0 -> ((mi, en) : ps, 0, 0) _ -> case en of 0 -> (ps, ac', mi) _ -> (ps, ac', en) where ac' = ac + c
Submission Info
Submission Time | |
---|---|
Task | D - 感雨時刻の整理 |
User | fujiyan |
Language | Haskell (GHC 7.4.1) |
Score | 0 |
Code Size | 1989 Byte |
Status | CE |
Compile Error
Main.hs:77:15: Not in scope: c' Perhaps you meant one of these: `c' (line 71), c'' (line 77)