static void Main(string[] args)
{
int num = int.Parse(Console.ReadLine());
var boxList = new List <Box <int> >();
for (int i = 0; i < num; i++)
{
var data = int.Parse(Console.ReadLine());
var currentBox = new Box <int>(data);
boxList.Add(currentBox);
}
int[] swapCommand = Console.ReadLine().Split().Select(int.Parse).ToArray();
int num1 = swapCommand[0];
int num2 = swapCommand[1];
Box <string> .MyMethod(boxList, num1, num2);
foreach (var item in boxList)
{
Console.WriteLine($"{item.data.GetType()}: {item.data}");
}
}
