#include<iostream>
#include<vector>
using namespace std;
#define REP(i, a, n) for(int i=a; i<n; i++)
#define MAX (1<<15)

int main()
{
	int N;
	vector<int> A;
	cin >> N;
	REP(i, 0, N) {
		int a;
		cin >> a;
		A.push_back(a);
	}

	vector<bool> dp(MAX + 1, false);
	dp[0] = true;
	REP(i, 0, N) {
		REP(j, 0, MAX) {
			if (dp[j]) dp[j^A[i]] = true;
		}
	}

	int count = 0;
	REP(j, 0, MAX) {
		if (dp[j]) count++;
	}

	cout << count << endl;
    return 0;
}