#include <bits/stdc++.h>

using namespace std;

template<typename Weight, typename Value> Value knapsack(Weight maxWeight, const vector<Weight>& weight, const vector<Value>& value) {
  vector<Value> dp1(maxWeight + Weight(1)), dp2(maxWeight + Weight(1));
  for (size_t i = 0; i < weight.size(); ++i) {
    for (int w = 0; w <= maxWeight; ++w) {
      Weight ww = Weight(w) + weight[i];
      Value vv = dp1[w] + value[i];
      if (ww <= maxWeight && dp2[ww] < vv) dp2[ww] = vv;
    }
    dp1 = dp2;
  }
  return dp1[maxWeight];
}

template<typename Weight, typename Value = long long> vector<Value> knapsack_counter(Weight maxWeight, const vector<Weight>& weight) {
  vector<Value> dp1(maxWeight + Weight(1)), dp2(maxWeight + Weight(1));
  dp1[0] = dp2[0] = 1;
  for (auto& w : weight) {
    for (int i = 0; i <= maxWeight; ++i) {
      Weight ww = Weight(i) + w;
      if (ww <= maxWeight) dp2[ww] += dp1[i];
    }
    dp1 = dp2;
  }
  return dp1;
}

template<typename Weight> vector<bool> knapsack_fill(Weight maxWeight, const vector<Weight>& weight) {
  vector<bool> dp1(maxWeight + Weight(1)), dp2(maxWeight + Weight(1));
  dp1[0] = dp2[0] = true;
  for (auto& w : weight) {
    for (int i = 0; i <= maxWeight; ++i) {
      Weight ww = Weight(i) + w;
      if (ww <= maxWeight && dp1[i]) dp2[ww] = true;
    }
    dp1 = dp2;
  }
  return dp1;
}

struct Weight {
  int val;

  Weight() {}

  Weight(int val) : val(val) {}

  Weight operator+(const Weight& weight) const {
    return Weight(val ^ weight.val);
  }

  operator int() const {
    return val;
  }
};

int main() {
  int n;
  cin >> n;
  vector<Weight> a(n);
  for (auto& i : a) {
    int w;
    cin >> w;
    i = w;
  }
  auto v = knapsack_fill(Weight(1 << 15), a);
  cout << count(v.begin(), v.end(), true) << endl;
}