#include <algorithm>
#include <cstdio>
#include <iostream>
#include <string>
#include <vector>
#include <map>
#define rep(i,n) for (int i =0; i<n; ++i)
#define pb(x) push_back(x)
#define ll long long
using namespace std;

int main () {
  int n;
  cin >> n;
  int x[n];
  rep(i,n) cin >> x[i];
  int r [2] = {0, 0};
  rep(i,n) r[abs(x[i]) % 2]++;
  cout << abs(r[0] - r[1]) << endl;
  return 0;
}