結果
| 問題 | No.627 ランダムウォークの軌跡 |
| コンテスト | |
| ユーザー |
はむ吉🐹
|
| 提出日時 | 2018-01-05 22:19:15 |
| 言語 | Haskell (9.14.1) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 316 bytes |
| 記録 | |
| コンパイル時間 | 5,175 ms |
| コンパイル使用メモリ | 197,632 KB |
| 実行使用メモリ | 7,976 KB |
| 最終ジャッジ日時 | 2026-05-29 08:18:53 |
| 合計ジャッジ時間 | 7,504 ms |
|
ジャッジサーバーID (参考情報) |
judge3_0 / judge2_0 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 31 WA * 2 |
コンパイルメッセージ
Loaded package environment from /home/judge/.ghc/x86_64-linux-9.14.1/environments/default
[1 of 2] Compiling Main ( Main.hs, Main.o )
Main.hs:4:24: warning: [GHC-63394] [-Wx-partial]
In the use of ‘tail’
(imported from Prelude, but defined in GHC.Internal.List):
"This is a partial function, it throws an error on empty lists. Replace it with 'drop' 1, or use pattern matching or 'GHC.Internal.Data.List.uncons' instead. Consider refactoring to use "Data.List.NonEmpty"."
|
4 | diff xs = zipWith (-) (tail xs) (init xs)
| ^^^^
[2 of 2] Linking a.out
ソースコード
import Control.Monad (replicateM)
diff :: Num a => [a] -> [a]
diff xs = zipWith (-) (tail xs) (init xs)
judge :: Integral a => [a] -> Bool
judge = all (== 1) . fmap abs . diff
main :: IO ()
main = do
t <- readLn :: IO Int
xs <- replicateM t readLn :: IO [Int]
putStrLn $ if judge xs then "T" else "F"
はむ吉🐹