#include <algorithm>
#include <ctime>
#include <functional>
#include <iostream>
#include <map>
#include <new>
#include <set>
#include <ostream>
#include <queue>
#include <vector>

using namespace std;

using ld = long double;
using ll = long long;
using ull = unsigned long long;

template <class T> using pq = priority_queue<T>;
template <class T> using pqg = priority_queue<T, vector<T>, greater<T>>;

const long long MOD = 998244353;
bool dp[5000][(1 << 15) + 1];

int main(void) {
  int n;
  cin >> n;

  vector<int> a(n);
  for (int i = 0; i < n; ++i) cin >> a[i];

  dp[0][0] = 1;

  for (int i = 0; i < n; ++i) {
    for (int j = 0; j < (1 << 15); ++j) {
      if (!dp[i][j]) continue;
      dp[i + 1][j] = 1;
      dp[i + 1][j ^ a[i]] = 1;
    }
  }

  int ans = 0;
  for (int i = 0; i < (1 << 15); ++i) {
    if (!dp[n][i]) continue;
    ++ans;
  }

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