#include <iostream>
#include <vector>

using namespace std;

int main() {
    int n;
    cin >> n;

    vector<bool> dp(40000);
    dp[0] = true;
    for (int i = 0; i < n; i++) {
        int a;
        cin >> a;
        for (int j = 0; j < 40000; j++) {
            if (dp[j])dp[j ^ a] = true;
        }
    }

    int count = 0;
    for (int i = 0; i < 40000; i++) {
        if (dp[i])count++;
    }
    cout << count << endl;
    return 0;
}