#include <bits/stdc++.h>
using namespace std;
#define rep(i, ss, ee) for (int i = ss; i < ee; ++i)

void solve() {
  int N;
  int x, ans = 0;
  cin >> N;
  rep(i, 0, N) {
    cin >> x;
    (x & 1) ? ans++ : ans--;
  }
  cout << abs(ans) << endl;
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  solve();
  getchar();
}