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);
}