結果

問題 No.355 数当てゲーム(2)
ユーザー aimy
提出日時 2017-04-19 14:09:20
言語 Haskell
(9.10.1)
結果
AC  
実行時間 32 ms / 2,000 ms
コード長 523 bytes
コンパイル時間 1,888 ms
コンパイル使用メモリ 174,076 KB
実行使用メモリ 25,904 KB
平均クエリ数 5.52
最終ジャッジ日時 2024-07-17 00:54:20
合計ジャッジ時間 5,550 ms
ジャッジサーバーID
(参考情報)
judge3 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
other AC * 52
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:21:33: 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."
   |
21 |    putStrLn (unwords (map show (head ps)))
   |                                 ^^^^
[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.Monad
import System.IO
import Data.List
perms = do
n1 <- [0..9]
n2 <- [0..9] \\ [n1]
n3 <- [0..9] \\ [n1,n2]
n4 <- [0..9] \\ [n1,n2,n3]
return [n1,n2,n3,n4]
next h b (ns@[n1,n2,n3,n4]:ps) = do
cand <- ps
guard (length (filter id (zipWith (==) ns cand)) == h)
guard (length (intersect ns cand) == h+b)
return cand
main = main' perms
where
main' ps = do
putStrLn (unwords (map show (head ps)))
hFlush stdout
[h,b] <- map read . words <$> getLine
unless (h == 4) (main' (next h b ps))
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