import logging
import sys
from inspect import currentframe

sys.setrecursionlimit(10 ** 6)
input = sys.stdin.readline

logging.basicConfig(level=logging.DEBUG)


def dbg(*args):
    id2names = {id(v): k for k, v in currentframe().f_back.f_locals.items()}
    logging.debug(
        ", ".join(id2names.get(id(arg), "???") + " = " + repr(arg) for arg in args)
    )


def main():

    MAX = 1 << 15
    n = int(input())
    a = list(map(int, input().split()))
    dp = [False] * MAX
    dp[0] = True
    for i in range(n):
        for j in range(MAX):
            if dp[j]:
                dp[j ^ a[i]] = True

    print(sum(dp))


if __name__ == "__main__":
    main()