class PersonL {
   private String name;
   private PersonL next;
   public PersonL(String name, PersonL next) {
      this.name = name;
      this.next = next;
   }
   public String getName() { return name; }
   public PersonL getNext() { return next; }
   public void setName(String name) { this.name = name; }
   public void setNext(PersonL next) { this.next = next; }
   public String toString() { return name+"->"+next; }
}

public class Friendster {
   public static void main(String[] args) {
      
      PersonL c = new PersonL("C",null);
      PersonL b = new PersonL("B",c);
      PersonL a = new PersonL("A",b);
      
      System.out.println(a);
      System.out.println(size(a));
      
   }
   public static int size(PersonL p) {
      
      int size = 0;
      while (p != null) {
         size++;
         p = p.getNext();
      }
      return size;
   }
}