import java.awt.Graphics;
import java.awt.Color;

class CourseSquare
{
   protected int centerX, centerY, side;

   public CourseSquare()
   {
      centerX = centerY = 20;
      side = 10;
   } // default constructor

   public CourseSquare(int cx, int cy)
   {
      centerX = cx;
      centerY = cy;
      side = 10;
   } // constructor

   public CourseSquare(int cx, int cy, int s)
   {
      centerX = cx;
      centerY = cy;
      side = s;
   } // constructor

   public void paint(Graphics g)
   {
      g.drawRect(centerX - side/2, centerY - side/2, 
         side, side);
   } // paint

   public double getArea()
   { 
      return side * side; 
   } // getArea

   public int getCenterX(){ return centerX; }
   public int getCenterY(){ return centerY; }
   public int getSide(){ return side; }

} // CourseSquare

class ColoredSquare extends CourseSquare
{
   protected Color theColor;

   public ColoredSquare()
   {
      super();
      theColor = new Color((int)(Math.random()*156) + 100, 
                 (int)(Math.random()*156) + 100,
                 (int)(Math.random()*156) + 100);
   } // default constructor

   public ColoredSquare(int cx, int cy)
   {
      super(cx, cy);
      theColor = new Color((int)(Math.random()*156) + 100, 
                 (int)(Math.random()*156) + 100,
                 (int)(Math.random()*156) + 100);
   } // constructor

   public ColoredSquare(int cx, int cy, int side, int r, int g, int b)
   {
      super(cx, cy, side);
      theColor = new Color(r, g, b);
   } // constructor

   public void paint(Graphics g)
   {
      Color oldColor = g.getColor();

      g.setColor(theColor);
      g.fillRect(centerX - side/2, centerY - side/2, side, side);
      g.setColor(oldColor);
   } // paint

   public Color getColor(){ return theColor; }
} // ColoredSquare