#include <bits/stdc++.h>

using namespace std;

int main(void) {
  int n;
  cin >> n;

  int even = 0, odd = 0;
  for (int i = 0; i < n; i++) {
    int x;
    cin >> x;
    even += !(x & 1);
    odd += (x & 1);
  }
  cout << abs(even - odd) << endl;

  return 0;
}