結果

問題 No.1289 RNG and OR
ユーザー 已经死了
提出日時 2024-06-30 02:11:29
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 481 ms / 2,000 ms
コード長 2,700 bytes
コンパイル時間 187 ms
コンパイル使用メモリ 82,456 KB
実行使用メモリ 130,184 KB
最終ジャッジ日時 2024-06-30 02:11:35
合計ジャッジ時間 5,365 ms
ジャッジサーバーID
(参考情報)
judge4 / judge2
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ファイルパターン 結果
other AC * 21
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ソースコード

diff #
プレゼンテーションモードにする

import os,sys,random,threading
#sys.exit() 退
#sys.setrecursionlimit(10**6) #
from random import randint,choice,shuffle
#randint(a,b)[a,b]
#choice(seq)seq,,seq
#shuffle(x)x
from copy import deepcopy
from io import BytesIO,IOBase
from types import GeneratorType
from functools import lru_cache,reduce
#reduce(op,)
from bisect import bisect_left,bisect_right
#bisect_left(x) x
#bisect_right(x) x
from collections import Counter,defaultdict,deque
from itertools import accumulate,combinations,permutations
#accumulate(a)alist[0]
#combinations(a,k)ak
#permutations(a,k)ak
from heapq import heapify,heappop,heappush
#heapify
from typing import Generic,Iterable,Iterator,TypeVar,Union,List
from string import ascii_lowercase,ascii_uppercase,digits
#
from math import ceil,floor,sqrt,pi,factorial,gcd,log,log10,log2,inf
#ceilfloor sqrt factorial
from decimal import Decimal,getcontext
#Decimal(s) Decimal,使
#getcontext().prec=100
from sys import stdin, stdout, setrecursionlimit
input = lambda: sys.stdin.readline().rstrip("\r\n")
MI = lambda :map(int,input().split())
li = lambda :list(MI())
ii = lambda :int(input())
mod = int(1e9 + 7) #998244353
inf = 1<<60
py = lambda :print("YES")
pn = lambda :print("NO")
DIRS = [(0, 1), (1, 0), (0, -1), (-1, 0)] #
DIRS8 = [(0, 1), (1, 1), (1, 0), (1, -1), (0, -1), (-1, -1), (-1, 0),(-1, 1)] # →↘↓↙←↖↑↗
mod=998244353
def popcnt(n):
c = (n & 0x5555555555555555) + ((n>>1) & 0x5555555555555555)
c = (c & 0x3333333333333333) + ((c>>2) & 0x3333333333333333)
c = (c & 0x0f0f0f0f0f0f0f0f) + ((c>>4) & 0x0f0f0f0f0f0f0f0f)
c = (c & 0x00ff00ff00ff00ff) + ((c>>8) & 0x00ff00ff00ff00ff)
c = (c & 0x0000ffff0000ffff) + ((c>>16) & 0x0000ffff0000ffff)
c = (c & 0x00000000ffffffff) + ((c>>32) & 0x00000000ffffffff)
return c
def inv(x):
return pow(x,mod-2,mod)
n=ii()
f=li()
tot=sum(f)
it=inv(tot)
for i in range(n):
for s in range(1<<n):
if s>>i&1==1:
f[s]+=f[s^(1<<i)]
for i in range(1<<n):
f[i]=f[i]*it%mod
res=0
t=(1<<n)-1
for s in range(1,1<<n):
if popcnt(s)%2:
res+=inv(1-f[t^s])
else:
res-=inv(1-f[t^s])
res%=mod
print(res)
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