#include <bits/stdc++.h>
using namespace std;

const int MAX = 32768;

int main(){
  int n; cin >> n;
  vector<int> a(n);
  for(int i=0; n>i; ++i) cin >> a[i];
  bool dp[n+1][MAX+1];
  for(int i=0; n>=i; ++i) for(int j=0; MAX>=j; ++j) dp[i][j] = false;
  dp[0][0] = true;
  for(int i=0; n>i; ++i){
    for(int j=0; MAX>=j; ++j){
      if(dp[i][j] == true) dp[i+1][j^a[i]] = true;
      if(dp[i][j] == true) dp[i+1][j] = true;
    }
  }
  int ans = 0;
  for(int i=0; MAX>=i; ++i) ans += dp[n][i];
  cout << ans << endl;
  /*for(int i=0; 10>i; ++i) cout << dp[n][i] << " ";
  cout << endl;*/
}