N = int(input())
A = list(map(int, input().split()))
M = 61
bit = [0]*M
ct = 0
for a in A:
    for i in range(M-1, -1, -1):
        if (a >> i) & 1:
            a ^= bit[i]
    if a == 0:
        continue
    ct += 1
    l = a.bit_length()-1
    bit[l] = a
    for i in range(l+1, M):
        if (bit[i] >> l) & 1:
            bit[i] ^= a

print(pow(2, ct))