include

using namespace std;

class Rectangle{

public:
int field_width;
int field_height;

void display(){ cout< class RectangleArea : public Rectangle{ public: void read_input(){ cin>>field_width; cin>>field_height; } int sum(){ return field_width * field_height; }
};

int main(){

RectangleArea obj1;

obj1.read_input();
int value = obj1.sum();
obj1.display();
cout<<value<<endl;

return 0;

}