using System;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        bool lastUp = true;

        bool lastLowercased = false;

        StringBuilder s = new StringBuilder("Unity3D");

        for (int i = 0; i < s.Length; ++i)

        {

            char c = s[i];

            bool up = Char.IsUpper(c);

            if (!up && lastLowercased)

            {

                s[i] = Char.ToUpper(c);

            }

​

            if (up && lastUp)

            {

                s[i] = Char.ToLower(c);

                if (i != 0) lastLowercased = true;

            }

            else

                lastLowercased = false;

            lastUp = up;

        }

​

        Console.WriteLine(s);

    }

}