結果

問題 No.70 睡眠の重要性！
ユーザー 情報学生
提出日時 2019-08-18 10:03:42
言語 Haskell
(9.10.1)
結果
AC  
実行時間 2 ms / 5,000 ms
コード長 753 bytes
コンパイル時間 4,166 ms
コンパイル使用メモリ 172,928 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-10-01 13:40:19
合計ジャッジ時間 4,642 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
other AC * 6
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コンパイルメッセージ
Loaded package environment from /home/judge/.ghc/x86_64-linux-9.8.2/environments/default
[1 of 2] Compiling Main             ( Main.hs, Main.o )

Main.hs:2:89: warning: [GHC-63394] [-Wx-partial]
    In the use of ‘tail’
    (imported from Prelude, but defined in GHC.List):
    "This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
  |
2 | toHHMM s = ((read :: String -> Int) . takeWhile (/= ':') s,(read::String−>Int).tail.dropWhile(/=′:′) s, (read :: String -> Int) . tail . dropWhile (/= ':')  s)
  |                                                                                         ^^^^

Main.hs:21:45: warning: [GHC-63394] [-Wx-partial]
    In the use of ‘tail’
    (imported from Prelude, but defined in GHC.List):
    "This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
   |
21 | main = interact $ show . solve . splitAt2 . tail . words
   |                                             ^^^^
[2 of 2] Linking a.out

ソースコード

diff #
プレゼンテーションモードにする

toHHMM :: String -> (Int, Int)
toHHMM s = ((read :: String -> Int) . takeWhile (/= ':') $ s, (read :: String -> Int) . tail . dropWhile (/= ':') $ s)
sleepTime :: (Int, Int) -> (Int, Int) -> Int
sleepTime (h1, m1) (h2, m2)
    | h2 >  h1 && m2 >= m1 = (h2 - h1) * 60 + m2 - m1
    | h2 >  h1 && m2 <  m1 = (h2 - 1 - h1) * 60 + m2 + 60 - m1
    | h2 == h1 && m2 >= m1 = m2 - m1
    | otherwise            = (h2 + 23 - h1) * 60 + m2 + 60 - m1
splitAt2 :: [String] -> [[String]]
splitAt2 = takeWhile (not.null) . map (take 2) . iterate (drop 2)
solve :: [[String]] -> Int
solve xss = sum zs
    where
        ys = map (map toHHMM) xss
        zs = map (\[x, y] -> sleepTime x y) ys
main :: IO ()
main = interact $ show . solve . splitAt2 . tail . words
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