include <iostream>
  include <string>
  
  using namespace std;
  
  class Book
  {
  public:
    virtual string getDescription() { return "Book"; }
  };
  
  class Paperback : public Book
  {
  public:
    virtual string getDescription() { 
      return "Paperback " + Book::getDescription(); 
    }
  };
  
  class Romance : public Paperback
  {
  public:
    virtual string getDescription() { 
      return "Romance " + Paperback::getDescription(); 
    }
  };
  
  class Technical : public Book
  {
  public:
    virtual string getDescription() { 
      return "Technical " + Book::getDescription();
    }
  };
  
  int main()
  {
    Romance novel;
    Book book;
    cout << novel.getDescription() << endl; // outputs "Romance Paperback Book"
    cout << book.getDescription() << endl;  // outputs "Book"
  }