dean2

using System;

public class Program
{
	public static void Main()
	{
		   string input = Console.ReadLine();
            string output = "";
            foreach (char sym in input)
            {
                if (char.IsLower(sym))
                {
                    output += char.ToUpper(sym);
                }
                else if (char.IsUpper(sym))
                {
                    output += char.ToLower(sym);

                }
                else if (char.IsDigit(sym))
                {
                    int number = int.Parse(sym.ToString());
                    number *= 2;
                    output += number;
                }
                else if (sym =='!'|| sym == '{' || sym == '}' || sym == ')' || sym == '(' || sym == ','||sym == '*' || sym == '@' || sym == '*'|| sym == '"' || sym == '$' || sym == '#' || sym == '%' || sym == '-' || sym == '^')
                {
                    output+=".";
                }

            }
            for (int i = output.Length-1;i>=0;i--)// Обръща местата им от АБ в БА
            {
                Console.Write(output[i]);
            }


        }
	}