#include <iostream>
#include <vector>
#include <queue>

using namespace std;

int main(){
  int N; cin >> N;
  vector<int> vi(N);
  for(int i=0;i<N;++i)cin>>vi[i];

  vector<bool> flag(1<<15, false);
  flag[0] = true;

  queue<int> q;
  q.push(0);
  while(!q.empty()){
	int x = q.front(); q.pop();
	for(int i=0;i<N;++i){
	  int t = x^vi[i];
	  if(!flag[t]){
		flag[t] = true;
		q.push(t);
	  }
	}
  }

  int ans = 0;
  for(int i=0;i<1<<15;++i)
	if(flag[i]) ++ans;
  cout << ans << endl;
  
  return 0;
}