import sys

def debug(x, table):
    for name, val in table.items():
        if x is val:
            print('DEBUG:{} -> {}'.format(name, val), file=sys.stderr)
            return None

def solve():
    N = int(input())
    As = [int(i) for i in input().split()]
    dp = [[False]*(2**15) for i in range(2)]
    dp[0][0] = True

    for a in As:
        for j in range(2**15):
            if dp[0][j] == True:
                dp[1][j] = True
                dp[1][a ^ j] = True
        dp[0] = dp[1][:]

    ans = sum(i for i in dp[1][:])

    print(ans)

if __name__ == '__main__':
    solve()