int numberOfLines = int.Parse(Console.ReadLine());
        List<Box<int>> boxCollection = new List<Box<int>>();

        for (int i = 0; i < numberOfLines; i++)
        {
            Box<int> boxInt = new Box<int>(int.Parse(Console.ReadLine()));
            boxCollection.Add(boxInt);
        }

        var indexes = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();

        SwapElements(boxCollection, indexes[0], indexes[1]);

        foreach (var box in boxCollection)
        {
            Console.WriteLine(box);
        }
    }

    private static void SwapElements<T>(List<T> boxCollection, int index1, int index2)
    {
        T tempBox = boxCollection[index1];
        boxCollection[index1] = boxCollection[index2];
        boxCollection[2] = tempBox;
    }