#include "bits/stdc++.h"
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define REP(i,x,n) for(int i=x;i<n;i++)
#define ALL(v) (v).begin(),(v).end()
#define MP(a,b) make_pair(a,b)
typedef long long LL;
typedef pair<int, int> PI;
typedef vector<int> VI;
const LL MOD = 1000000007LL;
bool dp[2][1 << 15];
int A[5000];
int main() {
	int N;
	cin >> N;
	rep(i, N) cin >> A[i];
	dp[0][0] = 1;
	rep(i, N) {
		int x = i & 1;
		rep(j, 1 << 15) dp[x ^ 1][j] = dp[x][j] | dp[x][j^A[i]];
	}
	int ans = 0;
	rep(i, 1 << 15) ans += dp[N % 2][i];
	cout << ans << endl;
}