#include <iostream>
#include <vector>
#include <math.h>
#include <stdio.h>
#include <algorithm>
#include <string>
#include <map>
#include <queue>
using namespace std;
#define ll long long

bool dp[5001][65536];

int main() {
  int N;
  cin >> N;
  int a[N];
  for(int i = 0; i < N; i++) {
    cin >> a[i];
  }
  dp[0][0] = true;
  for(int i = 0; i < N; i++) {
    for(int j = 0; j < 65536; j++) {
      dp[i+1][j] |= dp[i][j];
      if(!dp[i][j]) continue;
      dp[i+1][j ^ a[i]] = true;
    }
  }
  int ans = 0;
  for(int i = 0; i < 65536; i++) {
    if(dp[N][i]) ans++;
  }
  cout << ans << endl;




}