#include <bits/stdc++.h>
using namespace std;
int main() {
  int t;
  t = 1;
  while (t--) {
    int n;
    cin >> n;
    int cnt1 = 0, cnt2 = 0, x;
    for (int i = 0; i < n; i++) {
      cin >> x;
      if (x % 2 == 0)
        cnt1++;
      else
        cnt2++;
    }
    if (cnt2 % 2 == 0) {
      cout << cnt1 << endl;
    } else
      cout << cnt2 << endl;
  }
}
