#include <bits/stdc++.h>
using namespace std;

signed main(){
  int N; cin >> N;
  vector< int > X( N );
  for( int i = 0; i < N; ++i )
    cin >> X[ i ];
  int ocnt = 0, ecnt = 0;
  for( int i = 0; i < N; ++i )
    ocnt += X[ i ] & 1,
    ecnt += ~X[ i ] & 1;
  cout << abs( ocnt - ecnt ) << endl;
  return 0;
}