#include <iostream>

class Base
{
public:
    Base()
    {
        std::cout << "Base()\n";
    }
    ~Base()
    {
        std::cout << "~Base()\n";
    }
};

class Derived: public Base
{
public:
    Derived()
    {
        std::cout << "Derived()\n";
    }
    ~Derived()
    {
        std::cout << "~Derived()\n";
    }
};

int main()
{
    Derived d;
    Base b;
}