結果
| 問題 |
No.615 集合に分けよう
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-03-07 10:31:14 |
| 言語 | Haskell (9.10.1) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 388 bytes |
| コンパイル時間 | 2,267 ms |
| コンパイル使用メモリ | 175,872 KB |
| 実行使用メモリ | 37,632 KB |
| 最終ジャッジ日時 | 2024-06-23 14:46:55 |
| 合計ジャッジ時間 | 7,147 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 5 |
| other | AC * 24 WA * 2 |
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:7:16: 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."
|
7 | solve 1 _ as = head as
| ^^^^
Main.hs:10:32: 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."
|
10 | xs = zipWith (-) (reverse (tail as)) (reverse (init as))
| ^^^^
[2 of 2] Linking a.out
ソースコード
import Data.List
rInteger :: String -> Integer
rInteger = read
solve :: Int -> Int -> [Integer] -> Integer
solve 1 _ as = head as
solve n k as = foldr (+) 0 ts where
ts = take (n - k) $ sort xs
xs = zipWith (-) (reverse (tail as)) (reverse (init as))
main = do
[n, k] <- map read . words <$> getLine
as <- sort . map rInteger . words <$> getLine
print $ solve n k as