#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, i, j, p = 0, q = 0;
  cin >> n;
  int a[n];
  for (i = 0; i < n; i++) {
    cin >> a[i];
    if (a[i] % 2 == 0)
      p++;
    else
      q++;
  }
  if (p == 0 && n % 2 != 0)
    cout << q;
  else if (q % 2 == 0)
    cout << p;
  else
    cout << q;
}
