n = int(input())
A = list(map(int, input().split()))

N = 2**15+5
dp = [0]*N
dp[0] = 1
import copy
for i, a in enumerate(A):
    temp = copy.copy(dp)
    for j in range(N):
        if dp[j] == 1:
            temp[j^a] = 1
    dp = copy.copy(temp)
#print(dp)
print(sum(dp))