#include <bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
using namespace std;
typedef long long ll;
typedef pair<int, int> P;
ll INF = 1e18;

int main(){
    int N;
    cin >> N;

    vector<vector<bool> > dp(N+1, vector<bool>(32769, false));
    dp[0][0] = true;

    int a;
    rep(i,1,N+1){
        cin >> a;
        rep(j,0,32769){
            if(dp[i-1][j]){
                dp[i][j] = true;
                dp[i][a^j] = true; 
            }
        }
    }

    cout << accumulate(dp[N].begin(), dp[N].end(), 0) << endl;
}