結果
| 問題 |
No.370 道路の掃除
|
| コンテスト | |
| ユーザー |
aimy
|
| 提出日時 | 2017-05-03 08:39:47 |
| 言語 | Haskell (9.10.1) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 328 bytes |
| コンパイル時間 | 5,381 ms |
| コンパイル使用メモリ | 173,568 KB |
| 実行使用メモリ | 8,192 KB |
| 最終ジャッジ日時 | 2024-09-14 07:00:20 |
| 合計ジャッジ時間 | 6,780 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 6 WA * 28 |
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:11:56: warning: [GHC-63394] [-Wx-partial]
In the use of ‘head’
(imported from Data.List, 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."
|
11 | where move ds = guard ((not.null) ds) >> return (abs (head ds), map (subtract (head ds)) (tail ds))
| ^^^^
Main.hs:11:81: warning: [GHC-63394] [-Wx-partial]
In the use of ‘head’
(imported from Data.List, 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."
|
11 | where move ds = guard ((not.null) ds) >> return (abs (head ds), map (subtract (head ds)) (tail ds))
| ^^^^
Main.hs:11:92: warning: [GHC-63394] [-Wx-partial]
In the use of ‘tail’
(imported from Data.List, 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."
|
11 | where move ds = guard ((not.null) ds) >> return (abs (head ds), map (subtract (head ds)) (tail ds))
| ^^^^
[2 of 2] Linking a.out
ソースコード
import Data.List import Data.Ord import Control.Monad main = do [n,_] <- map read . words <$> getLine ds <- map read . words <$> getContents print (clean n ds) clean n = sum . take n . unfoldr move . sortBy (comparing abs) where move ds = guard ((not.null) ds) >> return (abs (head ds), map (subtract (head ds)) (tail ds))
aimy