import java.awt.*;
import java.applet.Applet;
public class Koridor extends Applet{
 public void paint(Graphics g){
  int x=100, y=100, laius=200, korgus=200;
  while(laius>5){
    g.drawRect(x, y, laius, korgus);
    g.drawOval(x, y, laius, korgus);
    g.drawOval(71, 71, (int) (Math.sqrt(2*laius*laius)) , (int) (Math.sqrt(2*korgus*korgus)));
    laius=laius/2;
    korgus=korgus/2;
    x=x+laius/2;
    y=y+laius/2;
  }
 }
 public static void main(String argumendid[]){
   Frame f=new Frame("Koridor");
   f.add(new Koridor());
   f.setSize(400, 400);
   f.setVisible(true);
 }
}