#include <iostream>
#include <memory>
 
class Base
{
public:
	virtual ~Base() {};
 
	virtual int getInfo() const = 0;
};
 
class Derived1 : public Base
{
public:
	Derived1(int x) : d1_(x) {}
	virtual int getInfo() const final { return d1_; }
 
private:
	int d1_;
};
 
class Derived2 : public Base
{
public:
	Derived2(int x) : d2_(x) {}
	virtual int getInfo() const final { return d2_; }
 
private:
	int d2_;
};
 
int main()
{
	std::unique_ptr<Base> d1(new Derived1(1));
	std::unique_ptr<Base> d2(new Derived2(2));
 
	std::cout << d1->getInfo() << std::endl << d2->getInfo();
 
	return 0;
}

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