#define _USE_MATH_DEFINES
#include  <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <string>
#include<math.h>
#include<iomanip>
#include<stdio.h>
#include <stdlib.h>
#include<stdio.h>
#include <queue>
#include<map>
#include <fstream>
#include <sstream>
#include<set>
#include<stack>
#include<time.h>
#include <sys/types.h>
#include <tuple>
#include <numeric>
#include <iterator>

typedef long long int ll;
//#include<bits/stdc++.h>


using namespace std;

ll gcd(ll a, ll b) {
    if (a < b)swap(a, b);
    if (b == 0)return a;
    return gcd(b, a % b);
}
int lcm(int a, int b) {
    return a * b / gcd(a, b);
}







int main()
{

    int Q;
    Q = 1;
    //cin >> Q;   

    while (Q--) {
        int n;
        cin >> n;
        vector<ll>p(n);
        for (int i = 0; i < n; i++)cin >> p[i];
        vector<vector<bool>>f(n+2, vector<bool>(1 << 15,0));
      
        f[0][0] = 1;
        ll ans = 0;
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < 1 << 15; j++) {
                if (!f[i][j])continue;
                f[i + 1][j] = 1;
                f[i + 1][j ^ p[i]] = 1;
            }
        }
        for (int i = 0; i < 1 << 15; i++) {
            if (f[n][i])ans++;
        }
        cout << ans;
    }
        return 0;
}