using System;

public class Program

{

    public static void Main()

    {

        string vName;

        int strLength;

        vName = Console.ReadLine();

        strLength = vName.Length;

        Console.WriteLine("This string contains " + strLength + " Characters. ");

        string vName1;

        vName1 = Console.ReadLine();

        vName1 = vName1.ToUpper();

        Console.WriteLine(vName1);

        string vName2;

        vName2 = Console.ReadLine();

        vName2 = vName1.ToLower();

        Console.WriteLine(vName2);

        string vName3;

        vName3 = Console.ReadLine();

        vName3 = vName3.Insert(4, "@braybrook.com ");

        Console.WriteLine(vName3);

    }

}