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

#define PI 4*atan(1)
#define INF 1e8

typedef long long ll;

int dx[4] = {1,0,-1,0};
int dy[4] = {0,1,0,-1};

int n[17000] = {0};
int N;
int dp[5001][17000] = {0};
void dfs(int i, int x, vector<ll> A){
  if(i == N + 1)return;
  if(dp[i][x] == 1)return;
  
  // n[x^A[i]] = 1;
  dp[i][x] = 1;
  n[x] = 1;
  dfs(i + 1, x^A[i], A);
  dfs(i + 1, x, A);
}

int main(){
  cin >> N;
  vector<ll> A(N + 1, 0);
  for(int i = 0; i < N; i++)cin >> A[i];
  dfs(0, 0, A);
  int cnt = 0;
  for(auto t : n)if(t == 1)cnt++;
  cout << cnt << endl;
}