#include <iostream>
#include <string>
using namespace std;

class Emp {
  protected:
    string fname, lanme
  public:
    void set_values (int a, int b)
      { fname=a; lanme=b; }
  };

class WithFname: public Emp {
  public:
    string ename ()
      { return (fname + ","+ lanme); }
  };

class WithLanme: public Emp {
  public:
    string ename ()
      { return (lname + fname); }
  };

int main () {
  WithFname obj1;
  WithLanme obj2;
  Emp * ppoly1 = &obj1;
  Emp * ppoly2 = &obj2;
  ppoly1->set_values ("Manas","Mukherjee");
  ppoly2->set_values ("Mukherjee","Manas");
  cout << obj1.ename() << endl;
  cout << obj2.ename() << endl;
  return 0;
}