#include <string>
using namespace std;

class member{
public:
  virtual void print()=0;
};

struct testmap{
 member *p;
};

class test{
  public:
    testmap tm;
  public:
    virtual ~test(){ }
    virtual void registerr()=0;
    virtual void unregisterr()=0;
    virtual void print()=0;

};