public class Program
{
    public static void Main()
    {
        //int num = int.Parse(Console.ReadLine() ?? string.Empty);
        string[] str = (Console.ReadLine() ?? string.Empty).Trim().Split(' ');
        //string str = Console.ReadLine() ?? string.Empty;


        string a = str[0];
        string b = str[1];
        if(a == b)
        {
            Console.WriteLine("{0} {1}", a, b);
        }
        else
        {
            Console.WriteLine("{0} {1}",b,a);
        }


    }
}