結果

問題 No.22 括弧の対応
ユーザー 佐藤淳平佐藤淳平
提出日時 2019-09-06 11:17:13
言語 Haskell
(9.8.2)
結果
AC  
実行時間 2 ms / 5,000 ms
コード長 673 bytes
コンパイル時間 5,292 ms
コンパイル使用メモリ 180,204 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-07-20 07:44:40
合計ジャッジ時間 3,912 ms
ジャッジサーバーID
(参考情報)
judge1 / judge2
このコードへのチャレンジ
(要ログイン)

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 AC 2 ms
6,812 KB
testcase_01 AC 2 ms
6,812 KB
testcase_02 AC 1 ms
6,940 KB
testcase_03 AC 2 ms
6,940 KB
testcase_04 AC 2 ms
6,944 KB
testcase_05 AC 2 ms
6,944 KB
testcase_06 AC 2 ms
6,944 KB
testcase_07 AC 2 ms
6,944 KB
testcase_08 AC 1 ms
6,940 KB
testcase_09 AC 2 ms
6,944 KB
testcase_10 AC 2 ms
6,940 KB
testcase_11 AC 2 ms
6,944 KB
testcase_12 AC 2 ms
6,944 KB
testcase_13 AC 2 ms
6,944 KB
testcase_14 AC 2 ms
6,944 KB
testcase_15 AC 2 ms
6,944 KB
testcase_16 AC 2 ms
6,944 KB
testcase_17 AC 2 ms
6,940 KB
testcase_18 AC 2 ms
6,944 KB
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:14:37: 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."
   |
14 |                             else if head xs == k
   |                                     ^^^^

Main.hs:17:50: 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."
   |
17 |                                             then head xs
   |                                                  ^^^^

Main.hs:18:61: 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."
   |
18 |                                             else f (i + 1) (tail xs) cs
   |                                                             ^^^^
[2 of 2] Linking a.out

ソースコード

diff #

import Control.Applicative ((<$>), (<*>))
import Data.ByteString.Char8 (ByteString)
import qualified Data.ByteString.Char8 as B

main :: IO ()
main = solve <$> (map read . words <$> getLine) <*> B.getLine >>= print

solve :: [Int] -> ByteString -> Int
solve [n, k] s = f 1 [] u
    where
        u = B.unpack s
        f i xs (c:cs) = if c == '('
                            then f (i + 1) (i : xs) cs
                            else if head xs == k
                                    then i
                                    else if i == k
                                            then head xs
                                            else f (i + 1) (tail xs) cs
0