public   class  CmkTT2{
     public   static   void  main(String[] args){
        String str =  new  String(" + str + ");
         for  ( int  i= 0 ;i< 2 ;i++)
            str = "package by.mk.mkTT2;" +
            		"public class CmkTT2{" +
            		"    public static void main(String[] args){" +
            		"        String str = new String(\" + str + \");" +
            		"        for (int i=0;i<2;i++)" +
            		"            str = \"" + str +
            		"\";        System.out.println(str);" +
            		"    }" +
            		"}";
        System.out.println(str);
    }
}