#include <iostream>
using namespace std;
class B {
protected:
int x;
public:
B(int i = 28) { x = i; }
virtual B f(B ob) { return x + ob.x + 1; }
void afisare() { cout << x; }
};
class D : public B {
public:
D(int i = -32)
: B(i)
{
}
B f(B ob) { return x + ob.x - 1; }
};
int main()
{
B *p1 = new D, *p2 = new B, *p3 = new B(p1->f(*p2));
p3->afisare();
return 0;
}