import java.util.*;
import java.lang.*;
import java.io.*;

public class Node {
       // Instance variables:
       private Object element;
       private Node next;
       // Simple constructors:
       public Node() {
         this(null, null);
       }
        public Node(Object e, Node n) {
         element = e;
         next = n;
       }
       // Accessor methods:
       Object getElement() {
         return element;
       }
       Node getNext() {
         return next;
       }
       // Modifier methods:
       void setElement(Object newElem) {
         element = newElem;
       }
       void setNext(Node newNext) {
         next = newNext;
       }
     }