#include <iostream>
using namespace std;

#include "list.h"


int main()
{
  cout << endl;

  List l;
  cin >> l ;
  cout << "List l" << " Located at " << &l << endl;
  cout << l << endl;

  cout << endl;

  List m;
  cin >> m ;
  cout << "List m" << " Located at " << &m << endl;
  cout << m << endl;

  List o = m;
  cout << "List o"  << " Located at " << &o<< endl;
  cout << o << endl;

  List p(m);
  cout << "List p"  << " Located at " << &p<< endl;
  cout << p << endl;

  List q;
  q = m;
  cout << "List q"  << " Located at " << &q<< endl;
  cout << q << endl;

  p = l + m;
  cout << "List p"  << " Located at " << &p<< endl;
  cout << p << endl;

  List r;
  r = o + m + l;
  cout << "List r"  << " Located at " << &r<< endl;
  cout << r << endl;

  List s,t;
  s = t = l;

  l.Erase();
  m.Erase();

  cout << "List l"  << " Located at " << &l<< endl;
  cout << l << endl;
  cout << "List m"  << " Located at " << &m<< endl;
  cout << m << endl;
  cout << "List q"  << " Located at " << &q<< endl;
  cout << q << endl;

  return 0;
}