#include "bits/stdc++.h"
#define REP(i, n) for(int i = 0; i < int(n); i++)
#define FOR(i,n,m) for(int i = int(n); i < int(m); i++)
using namespace std;
typedef long long ll;
const int MOD = 1e9 + 7;
const int INF = 1e9 + 6;
const ll LLINF = 1e18 + 1;

int main() {
    int n; cin >> n;
    vector<ll> a(n);
    REP(i, n) scanf("%lld", &a[i]);
    int cnt = 0;
    REP(i, n) {
        // 最大でも60回程度しかならないからO(NM)
        if (a[i] == 0) {
            continue;
        }
        cnt++;
        int x = 0;
        while ((1LL << (x+1)) <= a[i]) x++;
        //cout << i << " " << x << " " << cnt << endl;
        FOR(j, i+1, n) {
            if ((1LL << x) & a[j]) {
                a[j] ^= a[i];
            }
        }
    }
    cout << (1LL << cnt) << endl;
    return 0;
}