結果
| 問題 |
No.1934 Four Fruits
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2022-05-13 23:01:40 |
| 言語 | Haskell (9.10.1) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 2,000 ms |
| コード長 | 540 bytes |
| コンパイル時間 | 8,902 ms |
| コンパイル使用メモリ | 181,096 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-07-22 03:21:34 |
| 合計ジャッジ時間 | 9,468 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 7 |
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:18:17: 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."
|
18 | | otherwise = head $ [0, 1, 2, 3] \\ [a, b, c]
| ^^^^
[2 of 2] Linking a.out
ソースコード
import Control.Applicative
import Data.ByteString.Char8 (ByteString)
import qualified Data.ByteString.Char8 as B
import Data.List
import Data.Char (isSpace)
main :: IO ()
main = solve <$> f >>= print
where
f = readil B.readInt <$> B.getLine
solve :: [Int] -> Int
solve [a, b, c]
| a == b && b == c = a
| a == b = c
| b == c = a
| c == a = b
| otherwise = head $ [0, 1, 2, 3] \\ [a, b, c]
readil :: Integral a => (ByteString -> Maybe (a, ByteString)) -> ByteString -> [a]
readil f = unfoldr $ f . B.dropWhile isSpace