using System;

public class Program

{

    public static void Main()

    {

        //The goal is to change the high nibble of 0x49 from 4 to 7.  That is 0x49 ==> 0x79

        Byte b = 0x49;

        b = b & 0x0f;

        b = 0x70 | b;

        Console.WriteLine(b.ToString());

    }

}