#include <iostream>
using namespace std;

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

class RedCircle: public DrawApi
{
public:
    void drawCircle(int radius, int x, int y)
    {
        cout << "drawing circle [ color: red, radius: " << radius << ", x: " << x << ", y: " << y << " ]" << endl;
    }
};

class GreenCircle: public DrawApi
{
public:
    void drawCircle(int radius, int x, int y)
    {
        cout << "drawing circle [ color: green, radius: " << radius << ", x: " << x << ", y: " << y << " ]" << endl;
    }
};