結果

問題 No.751 Frac #2
ユーザー trineutron
提出日時 2019-06-16 02:12:01
言語 Haskell
(9.10.1)
結果
AC  
実行時間 2 ms / 1,000 ms
コード長 477 bytes
コンパイル時間 4,499 ms
コンパイル使用メモリ 173,824 KB
実行使用メモリ 6,820 KB
最終ジャッジ日時 2024-11-21 16:18:29
合計ジャッジ時間 5,702 ms
ジャッジサーバーID
(参考情報)
judge4 / judge3
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 * 2
other AC * 36
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:6:18: 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."
  |
6 |     let bunshi = head a * product [b !! i | i <- [0 .. length b - 1], odd i]
  |                  ^^^^

Main.hs:7:26: 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."
  |
7 |     let bumbo = product (tail a) * product [b !! i | i <- [0 .. length b - 1], even i]
  |                          ^^^^
[2 of 2] Linking a.out

ソースコード

diff #

main = do
    getLine
    a <- map read . words <$> getLine
    getLine
    b <- map read . words <$> getLine
    let bunshi = head a * product [b !! i | i <- [0 .. length b - 1], odd i]
    let bumbo = product (tail a) * product [b !! i | i <- [0 .. length b - 1], even i]
    let bunshi_div = bunshi `div` gcd bunshi bumbo * bumbo `div` abs bumbo
    let bumbo_div = bumbo `div` gcd bunshi bumbo * bumbo `div` abs bumbo
    putStrLn $ show bunshi_div ++ " " ++ show bumbo_div
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