Submission #2548883

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Source Code Expand

import numpy
import itertools

N = int(input())
A = [int(i) for i in input().split()]

per = itertools.product([-1,0,1], repeat=N)
ans = 0
for p in per:
  combined = numpy.array([x - y for (x,y) in zip(A,p)])
  product = numpy.prod(combined)
  if product % 2 == 0:
    ans += 1
print(ans)

Submission Info

Judge Result