#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

#define MAX_NUM 32769
int main()
{
	bool dp[MAX_NUM] = {}, dp2[MAX_NUM] = {};
	int N, a;
	cin >> N;
	dp[0] = 1;
	for (size_t i = 0; i < N; i++)
	{
		cin >> a;

		for (size_t j = 0; j < MAX_NUM; j++)
		{
			if (dp[j])
			{
				dp2[a^j] = 1;
			}
		}
		for (size_t j = 0; j < MAX_NUM; j++)
		{
			dp[j] |= dp2[j];
		}
		dp[a] = 1;
	}
	long long ans = 0;
	for (size_t i = 0; i < MAX_NUM; i++)
	{
		ans += dp[i];
	}
	cout << ans << endl;
}