結果

問題 No.5 数字のブロック
コンテスト
ユーザー highd
提出日時 2018-07-15 17:51:57
言語 Haskell
(9.10.1)
結果
AC  
実行時間 23 ms / 5,000 ms
コード長 1,320 bytes
コンパイル時間 5,683 ms
コンパイル使用メモリ 224,796 KB
実行使用メモリ 10,496 KB
最終ジャッジ日時 2024-11-18 12:32:19
合計ジャッジ時間 6,986 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
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ファイルパターン 結果
other AC * 34
権限があれば一括ダウンロードができます
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

<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:16:1: warning: [GHC-94817] [-Wtabs]
    Tab character found here, and in 39 further locations.
    Suggested fix: Please use spaces instead.
   |
16 |         
   | ^^^^^^^^
[2 of 2] Linking a.out

ソースコード

diff # 

{-# 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
import Data.Foldable

dropMay::Int->[a]->Maybe [a]
dropMay 0 [] = Just []
dropMay _ [] = Nothing
dropMay 0 list = Just list
dropMay v (x:xs) = dropMay (v-1) xs
	
(!-!)::[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

maybeList::[Maybe Int]->Maybe [Int]
maybeList [] = Just []
maybeList ((Just a):xs) = (a:) <$> (maybeList xs)
maybeList (Nothing:xs) = 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

f l [] n sum
	| l < sum = n - 1
	|otherwise = n
f l (x:xs) n sum 
	| l >= sum = f l xs (n+1) (sum+x)
	|otherwise = n - 1;

main_ list = do
	let get n = maybeRead=<<(list !-! n)::Maybe Int
	l<-get 0
	ws<-maybeList=<<fmap maybeRead<$>dropMay 2 list::Maybe [Int]
	return$f l (L.sort ws) 0 0 

main =	run main_ 3
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