#include <iostream>
using namespace std;
class B {
int x;
public:
B(int i = 17) { x = i; }
int get_x() { return x; }
operator int() { return x; }
};
class D : public B {
public:
D(int i = -16)
: B(i)
{
}
};
int main()
{
D a;
cout << 27 + a;
return 0;
}