using System;

public class Program

{

    public static void Main()

    {

        Console.Write("X: ");

        var x = Console.ReadLine();

        Console.Write("Y: ");

        var y = Console.ReadLine();

        var z = "";

        z = x;

        x = y;

        y = z;

        Console.WriteLine("----------------------------");

        Console.WriteLine("X: " + x);

        Console.WriteLine("Y: " + y);

    }

}