#include <iostream>
using namespace std;
class A {
public:
  A() { cout << "Constructing A" << endl; }
  ~A() { cout << "Destructing A" << endl; }
};
class B : public A {
public:
  ~B() { cout << "Destructing B" << endl; }
};
int main() {
  B b;
  
}
