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

dp = [[0] * ((1 << 14) + 1) for _ in range(N)]
dp[0][0] = 1
dp[0][A[0]] = 1
for i in range(N-1):
    for j in range((1 << 14) + 1):
        if dp[i][j]:
            dp[i+1][j^A[i+1]] = 1
            dp[i+1][j] = 1
print(sum(dp[N-1]))