#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int n;
  cin >> n;
  vector<int> a(n);
  rep(i, n) cin >> a[i];
  vector dp(n + 1, vector<bool>(1 << 15, false));
  dp[0][0] = true;
  rep(i, n) {
    rep(bit, 1 << 15) {
      if (dp[i][bit]) {
        dp[i + 1][bit] = true;
        dp[i + 1][bit ^ a[i]] = true;
      }
    }
  }
  int ans = 0;
  rep(i, 1 << 15) ans += dp[n][i];
  cout << ans << '\n';
  return 0;
}