結果
問題 | No.517 壊れたアクセサリー |
ユーザー | aimy |
提出日時 | 2017-05-29 15:22:13 |
言語 | Haskell (9.10.1) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 860 bytes |
コンパイル時間 | 8,237 ms |
コンパイル使用メモリ | 176,140 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-09-21 18:09:45 |
合計ジャッジ時間 | 6,984 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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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 | 1 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 1 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 1 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
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:21:9: 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 | pre = head a | ^^^^ [2 of 2] Linking a.out
ソースコード
import Control.Monad import Data.Maybe import Data.List last' xs = if null xs then Nothing else Just (last xs) main = do n <- readLn as <- replicateM n getLine m <- readLn bs <- replicateM m getLine putStrLn (maybe "-1" id (brokenAcc as bs)) brokenAcc as bs = do let as' = map (checkps bs) as guard (valid as') return (connect as') checkps bs a = (a, (prev,next)) where pre = head a suf = last a prev = find (elem pre) bs >>= last' . takeWhile (/= pre) next = find (elem suf) bs >>= last' . takeWhile (/= suf) . reverse valid = (\(ps,ss) -> (nothing ps, nothing ss) == (1,1)) . unzip . map snd where nothing = length . filter isNothing connect as = concat (unfoldr connect' (as,Nothing)) where connect' ([],_) = Nothing connect' (as,next) = Just (a, (as',Just (last a))) where ([(a,(_,s))],as') = partition ((==next).fst.snd) as