結果

問題 No.3016 ハチマキおじさん
ユーザー torus711
提出日時 2025-01-25 13:40:30
言語 Haskell
(9.10.1)
結果
AC  
実行時間 1,760 ms / 2,000 ms
コード長 1,617 bytes
コンパイル時間 14,142 ms
コンパイル使用メモリ 205,728 KB
実行使用メモリ 97,152 KB
最終ジャッジ日時 2025-01-25 22:56:20
合計ジャッジ時間 37,685 ms
ジャッジサーバーID
（参考情報） 		judge11 / judge9
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ファイルパターン 結果
other AC * 31
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-9.10.1/environments/default
[1 of 2] Compiling Main             ( Main.hs, Main.o )
Main.hs:34:11: warning: [GHC-63394] [-Wx-partial]
    In the use of ‘head’
    (imported from Data.List, but defined in GHC.Internal.List):
    "This is a partial function, it throws an error on empty lists. Use pattern matching, 'Data.List.uncons' or 'Data.Maybe.listToMaybe' instead. Consider refactoring to use "Data.List.NonEmpty"."
   |
34 | readStr = head <$> readStrs
   |           ^^^^

Main.hs:58:27: warning: [GHC-63394] [-Wx-partial]
    In the use of ‘head’
    (imported from Data.List, but defined in GHC.Internal.List):
    "This is a partial function, it throws an error on empty lists. Use pattern matching, 'Data.List.uncons' or 'Data.Maybe.listToMaybe' instead. Consider refactoring to use "Data.List.NonEmpty"."
   |
58 |                 res = map head $ group $ sort $ map snd $ filter ( ( == mi ) . fst ) res'
   |                           ^^^^

[2 of 2] Linking a.out

ソースコード

diff # 

{-# LANGUAGE BangPatterns #-}
{-# LANGUAGE BinaryLiterals #-}
{-# LANGUAGE MultiWayIf #-}
{-# LANGUAGE NumDecimals #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TupleSections #-}
{-# LANGUAGE FlexibleContexts #-}

{-# OPTIONS_GHC -O2 #-}
{-# OPTIONS_GHC -Wno-tabs #-}

import Control.Applicative
import Control.Arrow
import Control.Monad
import Control.Monad.ST

import Data.Char
import Data.List
import Data.Maybe

import qualified Data.ByteString.Char8 as B

import Data.Array
import Data.Array.ST.Safe
import Data.STRef

import Debug.Trace
import Text.Printf

readInt = fst . fromJust . B.readInt <$> B.getLine
readInteger = fst . fromJust . B.readInteger <$> B.getLine
readInts = map ( fst . fromJust . B.readInt ) . B.words <$> B.getLine
readIntegers = map ( fst . fromJust . B.readInteger ) . B.words <$> B.getLine
readStr = head <$> readStrs
readStrs = map B.unpack . B.words <$> B.getLine

which a b f = if f then a else b
yesno = which "Yes" "No"
mp [ a, b ] = ( a, b )

modifyArray a i f = writeArray a i =<< f <$> readArray a i

printList :: Show a => [a] -> IO ()
printList = putStrLn . intercalate " " . map show

main = do
	n <- readInt
	as <- sort <$> readInts
	bs <- sort <$> readInts
	let
		f xs ys = scanl (+) 0 $ map abs $ zipWith subtract xs ys
		left = listArray ( 0, n - 1 ) $ f as bs
		right = listArray ( 0, n - 1 ) $ f ( reverse as ) ( reverse bs )
		res' = do
			( i, a ) <- zip [ 0 .. ] as
			return $ ( left ! i + right ! ( n - 1 - i ), a )
		mi = minimum $ map fst res'
		res = map head $ group $ sort $ map snd $ filter ( ( == mi ) . fst ) res'
	print $ length res
	printList res
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