#include <bits/stdc++.h>
using namespace std;
const int MAX = 1 << 15;
int dp[MAX];

int main() {
    ios::sync_with_stdio(false);
    int n, t; cin >> n;
    dp[0] = true;
    for (int i = 0; i < n; i++) {
        cin >> t;
        for (int j = 0; j < MAX; j++)
            if(dp[j])
                dp[t ^ j] = true;
    }
    int ans = 0;
    for (int i = 0; i < MAX; i++)
        if(dp[i])
            ans++;
    cout << ans << endl;

    return 0;
}