#region Header
#!/usr/bin/env python3
# from typing import *

import sys
import io
import math
import collections
import decimal
import itertools
from queue import PriorityQueue
import bisect
import heapq

def input():
    return sys.stdin.readline()[:-1]

sys.setrecursionlimit(1000000)
#endregion

# _INPUT = """# paste here...
# """
# sys.stdin = io.StringIO(_INPUT)



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

    S = set([0])
    for i in range(N):
        for s in list(S):
            S.add(s ^ A[i])
    print(len(S))

if __name__ == '__main__':
    main()