#include <bits/stdc++.h>
using namespace std;

int main()
{
	int N;
	cin >> N;
	vector<bool> dp((1 << 14) + 1);
	dp[0] = true;
	for (int i = 0, a; i < N; i++) {
		cin >> a;
		auto tdp = dp;
		for (int i = 0; i <= 1 << 14; i++) {
			if (tdp[i]) {
				dp[i ^ a] = true;
			}
		}
	}
	int res = 0;
	for (int i = 0; i <= 1 << 14; i++) {
		if (dp[i]) {
			res++;
		}
	}
	cout << res << endl;
	return 0;
}