結果
問題 |
No.615 集合に分けよう
|
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