結果

問題 No.1934 Four Fruits
ユーザー ducktail
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
このコードへのチャレンジ
（要ログイン）
ファイルパターン 結果
sample AC * 3
other AC * 7
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: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

diff #
プレゼンテーションモードにする

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
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0