結果
問題 | No.123 カードシャッフル |
ユーザー |
|
提出日時 | 2016-04-03 15:41:46 |
言語 | Haskell (9.10.1) |
結果 |
AC
|
実行時間 | 321 ms / 5,000 ms |
コード長 | 270 bytes |
コンパイル時間 | 1,495 ms |
コンパイル使用メモリ | 170,496 KB |
実行使用メモリ | 54,912 KB |
最終ジャッジ日時 | 2024-10-02 12:37:08 |
合計ジャッジ時間 | 3,379 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 10 |
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:2:20: 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." | 2 | shuffle cards p = (head post) : pre ++ (tail post) | ^^^^ Main.hs:2:41: 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 | shuffle cards p = (head post) : pre ++ (tail post) | ^^^^ Main.hs:3:1: warning: [GHC-94817] [-Wtabs] Tab character found here, and in four further locations. Suggested fix: Please use spaces instead. | 3 | where pre = take (p-1) cards; | ^^^^^^^^ Main.hs:8:29: 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." | 8 | getLine >>= print . head . foldl shuffle [1..n] . map read . words | ^^^^ [2 of 2] Linking a.out
ソースコード
shuffle::Int->Int->Intshuffle cards p = (head post) : pre ++ (tail post)where pre = take (p-1) cards;post = drop (p-1) cardsmain = do[n, _] <- getLine >>= return . map read . wordsgetLine >>= print . head . foldl shuffle [1..n] . map read . words