N = int(input())
A = list(map(int, input().split()))
U = 60

mat = [[0] * (U+1) for _ in range(N)]
for i, a in enumerate(A):
    for j in range(U+1):
        mat[i][j] = (a >> j) & 1

ans = 0
check = [0] * N
for j in range(U+1):
    start = -1
    for i in range(N):
        if check[i]:
            continue
        if mat[i][j]:
            check[i] = 1
            ans += 1
            start = i
            break

    if start == -1:
        continue

    for i in range(N):
        if check[i]:
            continue
        if mat[i][j]:
            for k in range(U+1):
                mat[i][k] ^= mat[start][k]

print(1 << ans)