#include<iostream>
using namespace std;
#define REP(i, n) for(int(i)=0;(i)<(n);++(i))
bool dp[32768] = { true };
int main(){
	int n; cin >> n;
	REP(i, n){
		int a; cin >> a;
		REP(j, 32768) if (dp[j]) dp[j^a] = true;
	}
	int ans = 0;
	REP(j, 32768) if (dp[j]) ans++;
	cout << ans << endl;
	return 0;
}