#include <iostream>
#include <iomanip>

typedef long long ll;

int main(void)
{
  std::cin.tie(0);
  std::ios::sync_with_stdio(false);
  std::cout << std::fixed << std::setprecision(8);
  ll n;
  std::cin >> n;
  ll n_odd = 0, n_even = 0;
  for (ll i = 0; i != n; ++i) {
    ll xi;
    std::cin >> xi;
    (abs(xi) % 2 != 0 ? n_odd : n_even)++;
  }
  std::cout << std::abs(n_odd - n_even) << std::endl;
  return 0;
}