//Name: 
//Level: 
//Category: 
//Note: 

/**
 *
 */
#include <iostream>
#include <unordered_set>

using namespace std;

bool solve(bool first) {
    int N;
    if(!(cin >> N)) return false;

    unordered_set<int> res, buf;
    res.insert(0);
    for(int i = 0; i < N; ++i) {
        int a;
        cin >> a;
        buf.clear();
        for(const int n : res) {
            buf.insert(a ^ n);
        }
        res.insert(buf.begin(), buf.end());
    }
    cout << res.size() << endl;
    return true;
}

int main() {
    cin.tie(0);
    ios::sync_with_stdio(0);
    cout.setf(ios::fixed);
    cout.precision(10);

    bool first = true;
    while(solve(first)) {
        first = false;
    }
    return 0;
}