Problem:
Swapping Two Numbers

Write a program which reads two integers x and y, and prints them in ascending order.

Input

The input consists of multiple datasets. Each dataset consists of two integers x and y separated by a single space.

The input ends with two 0 (when both x and y are zero). Your program should not process for these terminal symbols.

Output

For each dataset, print x and y in ascending order in a line. Put a single space between x and y.

Constraints

0 ≤ x, y ≤ 10000

the number of datasets ≤ 3000

Sample Input

3 2
2 2
5 3
0 0

Sample Output

2 3
2 2
3 5

Solution in C# (judge verdict: Wrong Answer)

public partial class IntroductionToProgramming{
	public static void Main(){
		string[] str = System.Console.ReadLine().Split(' ');
		decimal a = decimal.Parse(str[0]);
		decimal b = decimal.Parse(str[1]);
		while(a != 0 && b != 0)
		{
			System.Console.WriteLine((a < b ? a.ToString() : b.ToString()) + " " + (a < b ? b.ToString() : a.ToString()));
			string[] str2 = System.Console.ReadLine().Split(' ');
			a = decimal.Parse(str2[0]);
			b = decimal.Parse(str2[1]);
		}
	}
}