// Page 166-167

import java.util.Scanner;
public class List
{
	private final int MAX = 50;
	private int length;
	private int[] data = new int[MAX];
	public List()
	{	length = 0;		}
	public int Length()
	{	return length;	}
	public boolean IsFull ()
	{	return (length == MAX);	}
	public boolean IsEmpty ()
	{	return (length == 0);	}
	public void Print ()
	{
		for (int k=0; k<length; k++)
			System.out.print(data[k] + " ");
		System.out.println();
	}
	public void Insert (int item)
	{
		data[length] = item;
		length ++;
	}
	public static void main(String[] args)
	{
		Scanner input=new Scanner(System.in);
		int x, y;
		x = input.nextInt();	// 15
		y = input.nextInt(); 	// 39
		List z = new List();
		z.Insert(x);
		z.Insert(y);
		z.Print();	// 15 39
		z.Insert(77);
		z.Print();	// 15 39 77
	}
}