#include <bits/stdc++.h>
#define GET_MACRO(a, b, c, NAME, ...) NAME
#define rep(...) GET_MACRO(__VA_ARGS__, rep3, rep2)(__VA_ARGS__)
#define rep2(i, a) rep3 (i, 0, a)
#define rep3(i, a, b) for (int i = (a); i < (b); i++)
#define repr(...) GET_MACRO(__VA_ARGS__, repr3, repr2)(__VA_ARGS__)
#define repr2(i, a) repr3 (i, 0, a)
#define repr3(i, a, b) for (int i = (b) - 1; i >= (a); i--)
#define chmin(a, b) ((b) < a && (a = (b), true))
#define chmax(a, b) (a < (b) && (a = (b), true))
using namespace std;
typedef long long ll;

int main() {
	int N;
	cin >> N;
	set<int> can;
	vector<int> A(N);
	rep (i, N) cin >> A[i];
	can.insert(0);
	rep (i, N) {
		set<int> prev = can;
		for (int x : prev) {
			can.insert(x ^ A[i]);
		}
	}
	cout << can.size() << endl;
	return 0;
}