#include <iostream>
using namespace std;
class B {
int i;
public:
B() { i = 1; }
int get_i() { return i; }
};
class D : public B {
int j;
public:
D() { j = 2; }
int get_j() { return j; }
};
int main()
{
B* p;
int x = 0;
if (x)
p = new B;
else
p = new D;
if (typeid(p).name() == "D*")
cout << ((D*)p)->get_j();
return 0;
}