#include <cstdio>
#include <vector>
#include <iostream>
#include <cassert>
#include <cstring>
#include <map>

using namespace std;
typedef long long ll;

const int MN = 100100;

bool dp[1<<16];
int main() {
    int n;
    cin >> n;
    dp[0] = true;
    for (int i = 0; i < n; i++) {
        int a;
        cin >> a;
        for (int j = 0; j < (1<<15); j++) {
            if (dp[j]) {
                dp[j ^ a] = true;
            }
        }
    }
    int res = 0;
    for (int i = 0; i < (1<<15); i++) {
        if (dp[i]) res++;
    }
    cout << res << endl;
    return 0;
}