using System;

public class Program

{

    public static void Main()

    {

         Console.Write("\nEnter  n : ");

        uint number;

        while (!uint.TryParse(Console.ReadLine(), out number)) Console.WriteLine("\nThis is not a valid input for uint number!\n\n");

        Console.Write("\nEnter  p ");

        int p;

        while (!int.TryParse(Console.ReadLine(), out p) || p < 0 || p > 31) Console.WriteLine("\nOut of range!\n\n");

        Console.Write("\nEnter  q : ");

        int q;

        while (!int.TryParse(Console.ReadLine(), out q) || q < 0 || q > 31) Console.WriteLine("\nTOut of range!\n\n");

​

        int maxValueOfK;

        if (p > q)

        {

            maxValueOfK = 32 - p;

        }

        else

        {

            maxValueOfK = 32 - q;

        }

        Console.WriteLine("\nEnter  k = " + maxValueOfK + " !\n");

        int k;

​

        while (!int.TryParse(Console.ReadLine(), out k) || p + k > 32 || q + k > 32) Console.WriteLine("\nOut of range!\n\n");

​

        bool overlap = (p < q && p + k >= q) || (q < p && q + k >= p);

        if (overlap)

        {

            Console.WriteLine("\nOverlapping !\n\n");

        }

        else

        {

            for (int i = 0; i <= k - 1; i++)

            {

                uint maskP = 1u << p;

​

                int bitPValue = (int)(number & maskP) >> p;

                uint maskQ = 1u << q;

                int bitQValue = (int)(number & maskQ) >> q;

                if (bitPValue == 1)

                {

                    number = number | maskQ;

                }

                else

                {

                    number = number & maskQ;

                }

                if (bitQValue == 1)

                {

                    number = number | maskP;

                }

                else

                {

                    maskP = ~maskP;

                    number = number & maskP;

                }

                p++;

                q++;

            }

            Console.WriteLine("\nResult : \n\n" + number + " \n\n\n");

        }

    }

}