#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,m,n) for(int i=m; i<n; ++i)
#define repl(i,m,n) for(ll i=m; i<n; ++i)

int main(){
    int N;
    cin >> N;
    vector<int> A(N);
    for(int &a : A) cin >> a;

    const int MAX = (1 << 15);

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

    rep(i, 0, N) rep(j, 0, MAX){
        if(dp[i][j]){
            dp[i+1][j] = true;
            dp[i+1][j ^ A[i]] = true;
        }
    }

    int ans = 0;
    rep(j, 0, MAX) if(dp[N][j]) ans++;

    cout << ans << endl;
    return 0;
}