using System;

public class Test
{
	public static void Main()
	{
		double a;
		double b;
		double hilf = 0 ;
		
	a = double.Parse(Console.ReadLine());
	b =	double.Parse(Console.ReadLine());
		Console.WriteLine("a b  hilf");
   		Console.WriteLine("{0} {1}   {2}", a, b, hilf);
   		hilf = a;
   		Console.WriteLine("{0} {1}   {2}", a, b, hilf);
   		a = b;
   		Console.WriteLine("{0} {1}   {2}", a, b, hilf);
   		b = hilf;
   		Console.WriteLine("{0} {1}   {2}", a, b, hilf);
	
	}
}