import java.awt.Button;
import java.awt.Event;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class Ena extends Frame{
	class Psl1 implements ActionListener{
		public void actionPerformed(ActionEvent e){
			System.exit(0);
		}
	}
	
	class Psl2 implements ActionListener{
		public void actionPerformed(ActionEvent e){
			int tmp = Integer.parseInt(desno.getLabel());
			tmp = (int)Math.sqrt(tmp);
			desno.setLabel(""+tmp);
		}
	}
	Button levo, desno;
	public Ena(){
		this.setLayout(new GridLayout(1, 2));
		Psl1 p1 = new Psl1();
		Psl2 p2 = new Psl2();
		levo = new Button("Zapri");
		levo.addActionListener(p1);
		
		desno = new Button("16");
		desno.addActionListener(p2);
		add(levo);
		add(desno);
		setSize(400, 200);
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Ena ee = new Ena();
		ee.show();
	}

}