#include <stdio.h>
#include "listobj.h"

class Int : public Obj {
	static char* name;
 public:
	int val;
	Int(int v) { val = v; }
	char* className() { return name; }
};

char* Int::name = "Int";

int main()
{
	Int dez=10;
	
	List l;
	int i;
	scanf(" %d", &i);
	while (i != 0)
	{
		l.insert(new Int(i));
		scanf(" %d", &i);
	}

	printf("----------\n");

	ListIter li(&l);

	li.first();
	while(!li.end())
		printf("%d ", ((Int*)(li.next()))->val);

	printf("\n");

	li.last();
	while(!li.end())
		printf("%d ", ((Int*)(li.prev()))->val);


	return 0;
}