#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;

int main() {
    const int MAX = 1 << 14;
    int n; cin >> n;
    vector<int> a(n);
    for (int &ai: a) cin >> ai;
    vector<int> dp(MAX + 1, 0);
    dp[0] = 1;
    for (int ai: a) {
        for (int i = MAX ^ ai; i >= 0; i--) dp[i ^ ai] |= dp[i];
    }
    int ans = 0;
    for (int i = 0; i <= MAX; i++) if (dp[i]) ans++;
    cout << ans << endl;
    return 0;
}