#include <iostream>
using namespace std;
 
struct B {
    virtual int f() {return 1;}
};
struct D1 : virtual public B {
    virtual int f(){return 2;}
};
struct D2 :  virtual public B{};
struct M : public D1, public D2 {
    virtual int f() {return 3;}
    virtual int g() {return D1::f();}
    virtual int h() {return B::f();}
};
 
int main()
{
    M m;
    D1 *d1 = &m;
    cout << m.f();
    cout << d1->f();
    cout << static_cast<D2&>(m).f();
    cout << m.g();
    cout << m.h();
    return 0;
}

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