#define _USE_MATH_DEFINES
#include <algorithm>
#include <cstdio>
#include <functional>
#include <iostream>
#include <cfloat>
#include <climits>
#include <cstring>
#include <cmath>
#include <fstream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <time.h>
#include <vector>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> i_i;
typedef pair<ll, int> ll_i;
typedef pair<double, int> d_i;
typedef pair<ll, ll> ll_ll;
typedef pair<double, double> d_d;
struct edge { int u, v; ll w; };

ll MOD = 1000000007;
ll _MOD = 1000000009;
double EPS = 1e-10;

int main() {
	vector<bool> a(1 << 15);
	int N; cin >> N;
	for (int i = 0; i < N; i++) {
		int A; cin >> A;
		vector<bool> _a = a;
		for (int x = 0; x < (1 << 15); x++)
			if (a[x])
				_a[x ^ A] = true;
		a = _a;
	}
	int cnt = 0;
	for (int x = 0; x < (1 << 15); x++)
		if (a[x])
			cnt++;
	cout << cnt << endl;
}