結果
| 問題 | No.40 多項式の割り算 | 
| コンテスト | |
| ユーザー |  aimy | 
| 提出日時 | 2017-08-27 13:27:00 | 
| 言語 | Haskell (9.10.1) | 
| 結果 | 
                                AC
                                 
                             | 
| 実行時間 | 29 ms / 5,000 ms | 
| コード長 | 396 bytes | 
| コンパイル時間 | 9,187 ms | 
| コンパイル使用メモリ | 171,264 KB | 
| 実行使用メモリ | 11,904 KB | 
| 最終ジャッジ日時 | 2024-11-06 06:40:25 | 
| 合計ジャッジ時間 | 7,849 ms | 
| ジャッジサーバーID (参考情報) | judge5 / judge1 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 3 | 
| other | AC * 32 | 
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:13:5: 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."
   |
13 |   | head bs == 0 = poly (d - 1) (tail bs)
   |     ^^^^
Main.hs:13:34: 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."
   |
13 |   | head bs == 0 = poly (d - 1) (tail bs)
   |                                  ^^^^
[2 of 2] Linking a.out
            
            ソースコード
main = do d <- readLn bs <- map read . words <$> getLine let r = poly d (reverse bs) let n = length r - 1 print n putStrLn $ unwords (map show r) poly d bs | all (== 0) bs = [0] | d == 3 && bs!!0 == bs!!2 && bs!!1 == 0 = [0] | d < 3 = reverse (dropWhile (== 0) bs) | head bs == 0 = poly (d - 1) (tail bs) | otherwise = let (b1:b2:b3:br) = bs in poly (d - 1) (b2:(b3+b1):br)
