#include <iostream>

using namespace std;

class A
{
 public :
            A(void) { cout << "A" << endl; }
   virtual ~A(void) { cout << "~A" << endl; };
};

class B : public A
{
 public :
            B(void) /* : A() */ { cout << "B" << endl; }
   virtual ~B(void) { cout << "~B" << endl; };
};

int main(void)
{
 B b;

 return 0;
}