public static void Main(string[] args)
{
var counter = int.Parse(Console.ReadLine());
var box = new Box <int>();
for (int i = 0; i < counter; i++)
{
var command = int.Parse(Console.ReadLine());
box.AddElements(command);
}
var command2 = Console.ReadLine().Split();
var firstIndex = int.Parse(command2[0]);
var secondIndex = int.Parse(command2[1]);
box.SwapElements(firstIndex, secondIndex);
Console.WriteLine(box.ToString());
}
