結果
| 問題 |
No.56 消費税
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2023-05-15 18:57:21 |
| 言語 | Haskell (9.10.1) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 502 bytes |
| コンパイル時間 | 8,276 ms |
| コンパイル使用メモリ | 178,308 KB |
| 実行使用メモリ | 6,824 KB |
| 最終ジャッジ日時 | 2024-11-30 23:36:52 |
| 合計ジャッジ時間 | 9,315 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 22 WA * 1 |
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:20:26: 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."
|
20 | let [d, p] = map read [head v, v !! 1]
| ^^^^
[2 of 2] Linking a.out
ソースコード
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
solve d p =
let v = floor (fromIntegral d * (fromIntegral p / 100))
in d + v
main :: IO ()
main = do
v <- prompt
let [d, p] = map read [head v, v !! 1]
print $ solve d p