#include <iostream>
#include <string>
class GraphicObject {
      virtual void move(int x, int y) =  0 ;
      virtual void remove() =  0 ;
};
class Point: GraphicObject {
   protected:
             int x, y, color;
             bool visible; 
  public:
  
   Point(int x, int y) {
           this->x = x;
           this->y = y;
           this->color =  0 ;
   };
   void move( int a, int b ) {
            this->x = x;
            this->y = y;        
   };
   virtual void remove() {
           this->visible = false;
   };
   virtual ~Point() {
   }; 
   
};

class Ring: public Point {
      protected:
                int r;
      public:
             Ring(int x, int y, int r) : Point(x, y){                      
                      this->r = r;
             };
             void changeR(int r) {
                  this->r = r;
             };
             virtual ~Ring() {};
              
};

class Cylinder: public Ring {
      protected:
                int h;
      public:
             Cylinder(int x, int y, int r, int h) : Ring(x, y, r) {
                        this->x = x;
                        this->y = y;
                        this->r = r;
                        this->h = h;
             };
             void changeH(int h) {
                  this->h = h;
             };
             virtual ~Cylinder() {};
};