#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, ce = 0, co = 0;
  scanf("%I64d", &n);
  int a[n];
  for (int i = 0; i < n; i++) {
    cin >> a[i];
    if (a[i] % 2 == 0)
      ce++;
    else
      co++;
  }
  if (co % 2 == 0)
    cout << ce;
  else
    cout << co;
  return 0;
}
