#include <stdio.h>
template <class Elem> 
class Link
{
	public:
	Elem element;
	Link * next;
	Link(const Elem & elemval, Link * nextval = NULL)
	{
		element = elemval;
		next = nextval;
	}
	Link(Link *nextval = NULL)
	{
		next = nextval;
	}
};