#include <iostream>
using namespace std;
 
class PreDupa
{
public:
	PreDupa()
	{
		cout << "PreDupa created" << endl;
	}
 
	~PreDupa()
	{
		cout << "PreDupa deleted" << endl;
	}
};
 
class Dupa
{
public:
	Dupa()
	{
		cout << "Dupa created" << endl;
	}
 
	~Dupa()
	{
		cout << "Dupa deleted" << endl;
	}
 
	PreDupa pre;
};
 
class Dupaa : public Dupa
{
	public:
	Dupaa()
	{
		cout << "Dupaa created" << endl;
	}
 
	~Dupaa()
	{
		cout << "Dupaa deleted" << endl;
	}
};
 
int main() {
	// your code goes here
	{
		Dupaa dupa;
	}
	return 0;
}

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