結果

問題 No.3070 Collecting Coins Speedrun 2
ユーザー torus711
提出日時 2025-03-21 22:42:51
言語 Haskell
(9.10.1)
結果
AC  
実行時間 27 ms / 2,000 ms
コード長 1,666 bytes
コンパイル時間 6,683 ms
コンパイル使用メモリ 205,900 KB
実行使用メモリ 15,744 KB
最終ジャッジ日時 2025-03-21 22:43:00
合計ジャッジ時間 5,594 ms
ジャッジサーバーID
(参考情報)
judge1 / judge3
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 32
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:36:11: 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"."
   |
36 | readStr = head <$> readStrs
   |           ^^^^

[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 Data.Either
import Data.Bool

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

yesno = bool "No" "Yes"
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

a *% b = ( a * b ) `mod` 998244353

main = do
	n <- readInt
	cs <- readInts
	let
	 	cnt op = length . filter op
		posis = cnt ( 0 < ) cs
		negas = cnt ( < 0 ) cs
		zeros = n - posis - negas
		res = if posis == 0 && negas == 0
			then 1
			else if 0 < posis && 0 < negas
				then 2 *% choose ( posis - 1 ) *% choose ( negas - 1 ) *% if 0 < zeros
					then 3
					else 1
				else choose ( posis - 1 ) *% choose ( negas - 1 ) *% if 0 < zeros
					then 2
					else 1
	print res

choose n = foldl' (*%) 1 $ take ( max 0 n ) $ repeat 2
0