class Dot {
  x = 0;
  y = 0;

  function constructor(x1,y1)
  {
      this.x=x1; this.y=y1;
  }
}


class Rectangle extends Dot {
  height = 0;
  width = 0;

  function constructor (x,y, h,b)
  {
    this.height=h; this.width=b;
    base.constructor(x,y);
  }
  function Output()
  {
    ::print(x+","+y+","+height+","+width+" \n");
  }
}