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

class LinkedList<T extends Comparable <T>>
{
	private Node head;
	private Node last;
	private T data;

	public LinkedList()
	{
		head = null;
	}

	public boolean isEmpty()
	{
		return (head==null);
	}


	public void addToHead (T val)
	{

public class LinkedList<T>{
    private Node head;
    
    
    public LinkedList()
    {
        head = null;
    }
    
    public boolean isEmpty()
    {
        return (head==null);
    }
    
    public void addToHead(T val )
    {
        Node n = new Node(val);
        n.next = head;
        head   =

#include <stdio.h>

struct pencil{
int hardness;
char maker;
int number;
};



struct pencil add(struct pencil pen);

int main(void){
int i;

struct pencil pen;
 struct pencil p[3];
 

p=add(&pen);
 



for (i = 0; i < 3; ++i){
	printf("\n%d   %c%  d%",