n = int(input())
A = list(map(int, input().split()))
m = 15
tf = [False] * (1 << m)
tf[0] = True
stack = [0]
while stack:
    x = stack.pop()
    for a in A:
        if not tf[a ^ x]:
            tf[a ^ x] = True
            stack.append(a ^ x)
print(sum(tf))