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

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