結果
| 問題 |
No.81 すべて足すだけの簡単なお仕事です。
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2018-09-04 13:27:17 |
| 言語 | Haskell (9.10.1) |
| 結果 |
AC
|
| 実行時間 | 3 ms / 5,000 ms |
| コード長 | 804 bytes |
| コンパイル時間 | 9,410 ms |
| コンパイル使用メモリ | 174,848 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-07-22 16:42:32 |
| 合計ジャッジ時間 | 8,008 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 |
|---|---|
| other | AC * 30 |
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:16:28: 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."
|
16 | in if head a == '-'
| ^^^^
Main.hs:17:57: warning: [GHC-63394] [-Wx-partial]
In the use of ‘tail’
(imported from Prelude, 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."
|
17 | then negate (10 ^ 10 * read (tail a) + ib)
| ^^^^
[2 of 2] Linking a.out
ソースコード
import Control.Applicative
import Control.Monad
import Data.List.Split (splitOn)
main :: IO ()
main = do
n <- readLn
solve <$> replicateM n getLine >>= prt
solve :: [String] -> Integer
solve ss = sum . map f $ ss
where
f s = case splitOn "." s of
[a] -> read a * 10 ^ 10
[a, b] -> let ib = read (b ++ replicate (10 - length b) '0')
in if head a == '-'
then negate (10 ^ 10 * read (tail a) + ib)
else 10 ^ 10 * read a + ib
prt :: Integer -> IO ()
prt x = putStrLn $ sgn ++ a ++ "." ++ b
where
sgn = if x >= 0 then "" else "-"
sx = if x >= 0 then show x else show (negate x)
l = length sx
(a, b) = if l > 10 then splitAt (l - 10) sx else splitAt 1 (replicate (11 - l) '0' ++ sx)