n = int(input())
a = list(map(int, input().split()))
bits = [0] * 60  # Assuming up to 60-bit numbers

for num in a:
    current = num
    for i in reversed(range(60)):
        if (current >> i) & 1:
            if bits[i] == 0:
                bits[i] = current
                break
            else:
                current ^= bits[i]

k = sum(1 for x in bits if x != 0)
print(1 << k)