#define _USE_MATH_DEFINES
#include<stdio.h>
#include<string>
#include<iostream>
#include<cctype>
#include<cstdio>
#include<vector>
#include<stack>
#include<queue>
#include <algorithm>
#include<math.h>
#include<set>
#include<map>
#include<iomanip>

//#include<bits/stdc++.h>


using namespace std;

bool d[5200];
int main() {
	
	int n;
	cin >> n;
	d[0] = 1;
	for (int i = 0; i < n; i++) {
		int a;
		cin >> a;
		d[a] = true;
		for (int j = 0; j < 5003; j++) {
			if(d[j])d[a^j] = true;
		}
	}
	int s = 0;
	for (int i = 0; i < 5005; i++)
		if (d[i])s++;
	cout << s << endl;
	return 0;


}