#include "bits/stdc++.h"
using namespace std;
#define MAX 35000


bool now[MAX];
bool nex[MAX];
int main() {
	int N;
	cin >> N;
	vector<int> A(N);
	for (int i = 0; i < N; i++)
	{
		cin >> A[i];
	}
	int ans = 0;

	now[0] = true;
	for (int i = 0; i < N; i++)
	{
		for (int j = 0; j < MAX; j++)
		{
			nex[j] |= now[j ^ A[i]];
		}

		for (int j = 0; j < MAX; j++)
		{
			now[j] |= nex[j];
		}
	}

	for (int i = 0; i < MAX; i++)
	{
		if (now[i]) ans++;
	}


	cout << ans << endl;
	//cout << (1ll << ans) << endl;
}