#include <iostream>
#include <cstdio>
#include <string>
#include <vector>
#include <fstream>
#include <memory>
#include <boost/lexical_cast.hpp>

using namespace std;

struct Shape;

struct Renderer {
    virtual void drawCircle(int x, int y, int radius) const = 0;
    virtual void drawSquare(int side) const = 0;
};


struct Shape {
    Shape(Renderer &renderer) : renderer(renderer) {}
    Renderer& renderer;
    virtual void draw() const = 0;
};

struct Circle : Shape {
    int x;
    int y;
    int radius;
    Circle(Renderer& renderer, int x, int y, int radius) : Shape(renderer), x(x), y(y), radius(radius) {}

    void draw() const override {
        renderer.drawCircle(x, y, radius);
    }
};

struct Square : Shape {
    int side;
    Square(Renderer &renderer, int side) : Shape(renderer), side(side) {}

    void draw() const override {
        renderer.drawSquare(side);
    }
};

struct PointRenderer : Renderer {
    void drawCircle(int x, int y, int radius) const override {
        cout << "Drawing a circle as a vector of POINTS with the radius of " << radius << endl;
    }

    void drawSquare(int side) const override {
        cout << "Drawing a square as a vector of POINTS with the radius of " << side << endl;
    }
};

struct LineRenderer : Renderer {
    void drawCircle(int x, int y, int radius) const override {
        cout << "Drawing a circle as a vector of LINES with the radius of " << radius << endl;
    }

    void drawSquare(int side) const override {
        cout << "Drawing a square as a vector of LINES with the radius of " << side << endl;
    }
};

void bridgeDemo() {
    PointRenderer pointRenderer;
    LineRenderer lineRenderer;

    Circle circle1{pointRenderer, 0, 0, 10};
    Circle circle2{lineRenderer, 0, 0, 10};

    circle1.draw();
    circle2.draw();
}