class Program
{
     static void Main(string[] args)
     {
          IFigure figure = new Rectangle(30,40);
          IFigure clonedFigure = figure.Clone(); // прототип

          figure = new Circle(30);
          clonedFigure=figure.Clone(); // прототип
     }
}

interface IFigure
{
     IFigure Clone();
}

class Rectangle: IFigure
{
     int width;
     int height;

     public Rectangle(int w, int h)
     {
          width = w;
          height = h;
     }

     public IFigure Clone()
     {
          return new Rectangle(this.width, this.height);
     }
}

class Circle : IFigure
{
     int radius;

     public Circle(int r)
     {
          radius = r;
     }

     public IFigure Clone()
     {
          return new Circle(this.radius);
     }
}