結果

問題 No.370 道路の掃除
ユーザー aimyaimy
提出日時 2017-05-03 08:39:47
言語 Haskell
(9.8.2)
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
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 WA -
testcase_01 WA -
testcase_02 AC 1 ms
6,812 KB
testcase_03 AC 2 ms
6,944 KB
testcase_04 AC 2 ms
6,940 KB
testcase_05 WA -
testcase_06 AC 2 ms
6,940 KB
testcase_07 AC 1 ms
6,940 KB
testcase_08 AC 2 ms
6,940 KB
testcase_09 WA -
testcase_10 WA -
testcase_11 WA -
testcase_12 WA -
testcase_13 WA -
testcase_14 WA -
testcase_15 WA -
testcase_16 WA -
testcase_17 WA -
testcase_18 WA -
testcase_19 WA -
testcase_20 WA -
testcase_21 WA -
testcase_22 WA -
testcase_23 WA -
testcase_24 WA -
testcase_25 WA -
testcase_26 WA -
testcase_27 WA -
testcase_28 WA -
testcase_29 WA -
testcase_30 WA -
testcase_31 WA -
testcase_32 WA -
testcase_33 WA -
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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

diff # 

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))
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