結果
| 問題 |
No.22 括弧の対応
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2018-01-17 21:28:24 |
| 言語 | Haskell (9.10.1) |
| 結果 |
AC
|
| 実行時間 | 3 ms / 5,000 ms |
| コード長 | 464 bytes |
| コンパイル時間 | 4,181 ms |
| コンパイル使用メモリ | 173,696 KB |
| 実行使用メモリ | 5,376 KB |
| 最終ジャッジ日時 | 2024-07-20 07:28:50 |
| 合計ジャッジ時間 | 4,916 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 19 |
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:11:29: 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."
|
11 | else if head st == k then i
| ^^^^
Main.hs:12:46: 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."
|
12 | else if i == k then head st
| ^^^^
Main.hs:13:47: 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 | else f (i + 1) (tail st) cs
| ^^^^
[2 of 2] Linking a.out
ソースコード
import Control.Applicative ((<$>), (<*>))
main :: IO ()
main = do
solve <$> getl (map read . words) <*> getLine >>= print
solve :: [Int] -> String -> Int
solve [n, k] s = f 1 [] s
where
f i st (c:cs) = if c == '(' then f (i + 1) (i : st) cs
else if head st == k then i
else if i == k then head st
else f (i + 1) (tail st) cs
getl :: (String -> a) -> IO a
getl f = f <$> getLine