結果

問題 No.2259 Gas Station
ユーザー mtwtkman
提出日時 2023-05-14 15:15:13
言語 Haskell
(9.10.1)
結果
AC  
実行時間 2 ms / 2,000 ms
コード長 695 bytes
コンパイル時間 8,913 ms
コンパイル使用メモリ 169,600 KB
実行使用メモリ 6,820 KB
最終ジャッジ日時 2024-11-30 03:47:19
合計ジャッジ時間 9,987 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge4
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
sample AC * 3
other AC * 21
権限があれば一括ダウンロードができます
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:27:29: warning: [GHC-63394] [-Wx-partial]
    In the use of ‘head’
    (imported from Prelude, but defined in GHC.List):
    "This is a partial function, it throws an error on empty lists. Use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
   |
27 |   let [l, r, c] = map read [head vs, vs !! 1, vs !! 2]
   |                             ^^^^
[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

split :: String -> [String]
split = go ("", [])
  where
    go :: (String, [String]) -> String -> [String]
    go (a, acc) "" = acc <> [a]
    go (a, acc) (' ' : xs) = go ("", acc <> [a]) xs
    go (a, acc) (x : xs) = go (a <> [x], acc) xs
solve :: Int -> Int -> Int -> Int
solve l r c = go 1000 l
  where
    go :: Int -> Int -> Int
    go acc i
      | i > r = acc
      | otherwise =
          let v = (i * c) `mod` 1000
           in if v == 0
                then 0
                else go (min acc (1000 - v)) (i + 1)
prompt :: IO [String]
prompt = do split <$> getLine
main :: IO ()
main = do
  vs <- prompt
  let [l, r, c] = map read [head vs, vs !! 1, vs !! 2]
  print $ solve l r c
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