#include <iostream>

class IDrawer
{
public:
    virtual void drawCircle(int x, int y, double radius) = 0;
};

class SmallCircleDrawer : public IDrawer
{
public:
    virtual void drawCircle(int x, int y, double radius)
    {
        std::cout << "Small circle center = ( " << x << ", " << y << " ) radius = " << radius * RADIUS_MULTIPLIER << std::endl;
    }
private:
    static const double RADIUS_MULTIPLIER = 0.25;
};

class LargeCircleDrawer : public IDrawer
{
public:
    virtual void drawCircle(int x, int y, double radius)
    {
        std::cout << "Large circle center = ( " << x << ", " << y << " ) radius = " << radius * RADIUS_MULTIPLIER << std::endl;
    }
private:
    static const double RADIUS_MULTIPLIER = 10.0;
};

class Shape
{
public:
    Shape(IDrawer *drawer)
    {
        this->drawer = drawer;
    }

    virtual void draw() = 0;
    virtual void enlargeRadius(double multiplier) = 0;
protected:
    IDrawer *drawer;
};

class Circle : public Shape
{
public:
    Circle(int x, int y, double radius, IDrawer *drawer) : Shape(drawer)
    {
        this->x = x;
        this->y = y;
        this->radius = radius;
    }


    virtual void draw()
    {
        drawer->drawCircle(x, y, radius);
    }

    virtual void enlargeRadius(double multiplier)
    {
        radius *= multiplier;
    }
private:
    int x;
    int y;
    double radius;
};

int main()
{
    Circle *circle;
    circle = new Circle(5, 10, 10, new LargeCircleDrawer());
    circle->draw();
    circle = new Circle(20, 30, 100, new SmallCircleDrawer());
    circle->draw();
}