/* package whatever; // don't place package name! */

class Main{
  static void h(){
    System.out.print("1 2 3 4 5 6 7 8 9 10");
  }      

  static void l(){
    for(int i=0; ++i < 11;){
      System.out.println(i);
    }
  }

  static int i = 1;
  static void r(){
    System.out.println(i);
    if(i++ < 10){
      r();
    }
  }

  public static void main(String[] a){
    h();
    System.out.println();
    l();
    System.out.println();
    r();
  }
}