using System;

public class Program

{

    static uint m_bob;

    public static void Main()

    {

        SetData(0,0);

        SetData(1,1);

        SetData(2,2);

        SetData(3,3);

        SetData(4,4);

        SetData(5,5);

        SetData(7,7);

        Console.WriteLine(GetData(0));

        Console.WriteLine(GetData(1));

        Console.WriteLine(GetData(2));

        Console.WriteLine(GetData(4));

        Console.WriteLine(GetData(5));

        Console.WriteLine(GetData(7));

    }

​

    public static int GetData(int index)

    {

        return (int)(m_bob >> (index * 4) & 0x0F);

    }

​

    public static void SetData(int index, int difficulty)

    {

        uint num = 0;

        for(int i = 0; i < 8 ;i ++)

            if(index == i)

                num |= ((uint)(difficulty) << (4 * i));

            else

                num |= ((uint)(GetData(i)) << (4 * i));

        m_bob = num;

    }

}