Submission #8884999

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Source Code Expand

import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

import itertools
import numpy as np

N = int(readline())
info = []
for i in range(N):
    A = int(readline())
    for _ in range(A):
        x,y = map(int,readline().split())
        info.append((i,x-1,y))
        
A = np.array(list(itertools.product([0,1],repeat=N)),np.bool)
for i,x,y in info:
    bl = (~A[:,i]) | (A[:,x] == bool(y))
    A = A[bl]

answer = A.sum(axis = 1).max()
print(answer)

Submission Info

Judge Result