#include <iostream>
#include <queue>
#include <vector>
#include <cmath>
#include <algorithm>
#include <map>
#include <numeric>

using namespace std;
using ll = long long;
const ll INF = 1e9;
const ll MOD = 1e9 + 7;

bool dp[5010][16500]; // dp[i][k] = a[0] ~ a[i] までで k が作れるか

int main() {
    int N;
    cin >> N;
    ll a[N];
    for (int i = 0; i < N; i++) {
        cin >> a[i];
    }

    dp[0][0] = true;
    for (int i = 0; i < N; i++) {
        for (int k = 0; k < 16500; k++) {
            if (dp[i][k]) {
                dp[i+1][k ^ a[i]] = true;
                dp[i+1][k] = true;
            }
        }
    }

    int ans = 0;
    for (int i = 0; i < 16500; i++) {
        if (dp[N][i]) ans++;
    }
    cout << ans << endl;

    return 0;
}