#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<int> > dp(N+1, vector<int>(32769, 0));
    dp[0][0] = 1;

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

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