結果
| 問題 |
No.306 さいたま2008
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2016-08-13 20:49:55 |
| 言語 | Haskell (9.10.1) |
| 結果 |
AC
|
| 実行時間 | 9 ms / 2,000 ms |
| コード長 | 944 bytes |
| コンパイル時間 | 16,089 ms |
| コンパイル使用メモリ | 255,544 KB |
| 実行使用メモリ | 6,824 KB |
| 最終ジャッジ日時 | 2025-02-14 12:13:40 |
| 合計ジャッジ時間 | 5,570 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 26 |
コンパイルメッセージ
Loaded package environment from /home/judge/.ghc/x86_64-linux-9.10.1/environments/default
<no location info>: warning: [GHC-98887]
-XGeneralizedNewtypeDeriving is not allowed in Safe Haskell; ignoring -XGeneralizedNewtypeDeriving
[1 of 2] Compiling Main ( Main.hs, Main.o )
Main.hs:11:4: warning: [GHC-94817] [-Wtabs]
Tab character found here, and in 39 further locations.
Suggested fix: Please use spaces instead.
|
11 | [] !-! _ = Nothing
| ^^^^^
[2 of 2] Linking a.out
ソースコード
{-# LANGUAGE Safe #-}
{-# LANGUAGE PatternGuards #-}
import qualified Data.Text as T
import qualified Data.Text.IO as TI
import qualified Data.List as L
import Data.Monoid
import Data.Maybe
import Control.Applicative
(!-!)::[a]->Int->Maybe a
[] !-! _ = Nothing
(x:xs) !-! 0 = Just x
(x:xs) !-! n = xs !-! (n-1)
(<$~>)::Functor f => f a -> (a -> b) -> f b
(<$~>)=flip (<$>)
maybeRead s
|[(x,"")]<-(reads s)=Just x
|otherwise = Nothing
getLines::Int->IO T.Text
getLines 1 = TI.getLine
getLines n = (<>) <$> ((<>) <$> TI.getLine <*> return (T.pack " ")) <*> (getLines$n-1)
run main_f n=
getLines n <$~>
T.split (==' ') <$~>
fmap T.unpack <$~>
main_f <$~>
fmap show <$~>
fromMaybe "error" >>=
putStrLn
main_ list = do
let get n = maybeRead=<<(list !-! n)::Maybe Float
x1<-get 0
y1<-get 1
x2<-get 2
y2<-get 3
let x_distance = x1+x2
let y_distance = y2-y1
return$x1/x_distance*y_distance+y1
main = run main_ 2