結果
| 問題 |
No.406 鴨等間隔の法則
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2018-01-14 20:34:01 |
| 言語 | Haskell (9.10.1) |
| 結果 |
AC
|
| 実行時間 | 162 ms / 2,000 ms |
| コード長 | 555 bytes |
| コンパイル時間 | 3,311 ms |
| コンパイル使用メモリ | 180,912 KB |
| 実行使用メモリ | 21,760 KB |
| 最終ジャッジ日時 | 2024-07-07 12:19:06 |
| 合計ジャッジ時間 | 5,410 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 29 |
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:14:50: warning: [GHC-63394] [-Wx-partial]
In the use of ‘tail’
(imported from Data.List, but defined in GHC.List):
"This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
|
14 | solve xs = let sxs = sort xs in f $ zipWith (-) (tail sxs) sxs
| ^^^^
[2 of 2] Linking a.out
ソースコード
import Control.Applicative ((<$>))
import Data.List
import Data.Char (isSpace)
import Data.ByteString.Char8 (ByteString)
import qualified Data.ByteString.Char8 as B
main :: IO ()
main = do
B.getLine
solve <$> readIntList >>= putStrLn
solve :: [Int] -> String
solve xs = let sxs = sort xs in f $ zipWith (-) (tail sxs) sxs
where
f (y:ys) = if (y > 0) && all (== y) ys then "YES" else "NO"
readIntList :: IO [Int]
readIntList = unfoldr f <$> B.getLine
where
f s = do
(n, s') <- B.readInt s
return (n, B.dropWhile isSpace s')