N = int(input())
dp = [False] * (2 ** 15)
A = list(map(int, input().split()))
dp[0] = True
dp[A[0]] = True
for i in range(1, N):
    for j in range(2 ** 15):
        dp[j ^ A[i]] |= dp[j]
ans = 0
for i in range(2 ** 15):
    if dp[i]:
        ans += 1
print(ans)