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

int main() {
	int n, a[5000];
	cin >> n;
	for (int i = 0;i < n;i++) {
		cin >> a[i];
	}

	bool dp[32768] = { false };
	dp[0] = true;
	for (int i = 0;i < n;i++) {
		for (int j = 0;j < 32768;j++) {
			dp[j^a[i]] |= dp[j];
		}
	}
	int count = 0;
	for (int i = 0;i < 32768;i++) {
		if (dp[i]) {
			count++;
		}
	}
	cout << count << endl;

	return 0;
}