#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;

int n, x, ans;

int main() {
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> x;
    if (x % 2 == 0) ans++;
    else ans--;
  }
  cout << abs(ans) << endl;
  return 0;
}