from collections.abc import Iterable


def accum_dp(xs: Iterable, f, op, e: int, size: int, init: Iterable, *, is_reset=True):
    dp = [e] * size
    for i, v in init:
        dp[i] = v

    for x in xs:
        pp = [e] * size if is_reset else dp.copy()
        dp, pp = pp, dp
        for i in range(size):
            for p, v in f(i, pp[i], x):
                if not (0 <= p < size): continue
                dp[p] = op(dp[p], v)

    return dp


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


def next(i, v, x):
    # i: 作られる数
    # v: 組み合わせ数
    # x: xor される整数
    return [(i ^ x, v)]


def op(a, b):
    return a or b


dp = accum_dp(A, next, op, 0, 1<<15, [(0, True)], is_reset=False)
ans = sum(dp)
print(ans)