#include <iostream>
using namespace std;
 
class A
{
	public:
	A()
	{
		cout << "A ctor" << endl;
	}
 
	~A()
	{
		cout << "A dtor" << endl;
	}
};
 
class B : public A
{
	public:
	B()
	{
		cout << "B ctor" << endl;
	}
 
	~B()
	{
		cout << "B dtor" << endl;
	}
};
 
class C
{
	public:
	C()
	{
		cout << "C ctor" << endl;
	}
 
	~C()
	{
		cout << "C dtor" << endl;
	}
 
	private:
	A a;
	B b;
};
 
int main() {
	// your code goes here
	C c;
	return 0;
}

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