結果
問題 |
No.26 シャッフルゲーム
|
ユーザー |
![]() |
提出日時 | 2019-08-15 16:16:41 |
言語 | Haskell (9.10.1) |
結果 |
AC
|
実行時間 | 3 ms / 5,000 ms |
コード長 | 336 bytes |
コンパイル時間 | 2,751 ms |
コンパイル使用メモリ | 172,160 KB |
実行使用メモリ | 5,504 KB |
最終ジャッジ日時 | 2024-09-19 15:20:25 |
合計ジャッジ時間 | 2,232 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
other | AC * 10 |
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:8:40: 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." | 8 | solve (n:m:xs) = foldl (\n -> \t -> if head t == n then last t else if last t == n then head t else n) n ys | ^^^^ Main.hs:8:89: 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." | 8 | solve (n:m:xs) = foldl (\n -> \t -> if head t == n then last t else if last t == n then head t else n) n ys | ^^^^ [2 of 2] Linking a.out
ソースコード
main :: IO () main = interact $ show . solve . map read . words splitEvery2 :: [Int] -> [[Int]] splitEvery2 = takeWhile (not . null) . map (take 2) . iterate (drop 2) solve :: [Int] -> Int solve (n:m:xs) = foldl (\n -> \t -> if head t == n then last t else if last t == n then head t else n) n ys where ys = splitEvery2 xs