using System;

public class Program

{

    public static void Main()

    {

        string text_script = "Close on a portrait of the handsome prince -- as the BEAST'S gaint paw slashes it.";

        string[] text_list = text_script.Split(' ');

        string new_text = "";

        foreach (string text_part in text_list){

            if (text_part.Contains("Close") == true || text_part.Contains("on") == true){

                new_text += text_part.ToUpper() + " ";

            }

            else{

                new_text += text_part.ToLower() + " ";

            }

        }

        Console.WriteLine(new_text);

    }

}