import javax.swing.*;
public class klasa {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String txt;
		int n;
		do{
			do{
				txt=JOptionPane.showInputDialog("n=");
			}while(txt==null||txt.isEmpty());
			n=Integer.parseInt(txt);
			}while(n<2|n>5);
		//wypelnieine tablicy
		int[][] tab = new int[n][n];
		for(int i=0;i<n;i++);
			for(int j=0;j<n;j++);
	}

}