#include <iostream>
using namespace std;
class A
{
int i;
public:
A(int x = 3) : i(x) {}
virtual int get_i() { return i; }
};
class B : public A
{
int j;
public:
B(int x = 10) : j(x) {}
virtual int get_j() { return A::get_i() + j; }
};
int main()
{
A o1(5);
B o2;
cout << o1.get_i();
cout << o2.get_j();
cout << o2.get_i();
return 0;
}