結果
| 問題 |
No.5 数字のブロック
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2023-05-15 19:29:14 |
| 言語 | Haskell (9.10.1) |
| 結果 |
AC
|
| 実行時間 | 946 ms / 5,000 ms |
| コード長 | 698 bytes |
| コンパイル時間 | 5,083 ms |
| コンパイル使用メモリ | 171,776 KB |
| 実行使用メモリ | 14,976 KB |
| 最終ジャッジ日時 | 2024-12-14 01:38:33 |
| 合計ジャッジ時間 | 13,351 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 34 |
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:24:22: 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."
|
24 | l :: Int <- read . head <$> prompt
| ^^^^
Main.hs:25:22: warning: [GHC-63394] [-Wx-partial]
In the use of ‘head’
(imported from Prelude, but defined in GHC.List):
"This is a partial function, it throws an error on empty lists. Use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
|
25 | n :: Int <- read . head <$> prompt
| ^^^^
[2 of 2] Linking a.out
ソースコード
import Data.List (sort)
split :: String -> [String]
split = go ("", [])
where
go :: (String, [String]) -> String -> [String]
go (a, acc) "" = acc <> [a]
go (a, acc) (' ' : xs) = go ("", acc <> [a]) xs
go (a, acc) (x : xs) = go (a <> [x], acc) xs
prompt :: IO [String]
prompt = do split <$> getLine
solve :: Int -> Int -> [Int] -> Int
solve l n ws = go 0 l (sort ws)
where
go :: Int -> Int -> [Int] -> Int
go c acc [] = c
go c 0 _ = c
go c acc (x : xs) = if acc < x then c else go (c + 1) (acc - x) xs
main :: IO ()
main = do
l :: Int <- read . head <$> prompt
n :: Int <- read . head <$> prompt
ws :: [Int] <- map read <$> prompt
print $ solve l n ws