using System;

public class Test
{
	public static void Main()
	{
	int a;
	int b;
	int c;
	int d;
	
	a = int.Parse(Console.ReadLine());
	b = int.Parse(Console.ReadLine());
	
	Console.WriteLine(a);
	Console.WriteLine(b);
	
	c = a;
	d = b;
	
	Console.WriteLine(d);
	Console.WriteLine(c);
	}
}