#include <cstdio>
#include <vector>
#include <iostream>
#include <cassert>
#include <cstring>
#include <map>
#include <set>
using namespace std;
#define int long long
typedef long long ll;


const int MN = 100100;

ll a[MN];
signed main() {
    int n;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    set<int> s;
    for (int i = 0; i < 62; i++) {
        int res = -1;
        for (int j = 0; j < n; j++) {
            if (!s.count(j) && a[j] & (1<<i)) {
                res = j;
                break;
            }
        }
        if (res == -1) continue;
        s.insert(res);
        for (int j = 0; j < n; j++) {
            if (j == res) continue;
            if (!(a[j] & (1<<i))) continue;
            a[j] ^= a[res];
        }
    }
    ll r = 1;
    for (int i = 0; i < (int)s.size(); i++) {
        r <<= 1;
    }
    cout << r << endl;
    return 0;
}