public class Program

{

    public static void Main()

    {

        //.NET Fiddle doesn't support parameters so I simulate them this way

        P.Main(new string[]{ "DDoouubbllee  ssppeeaakk!!" });

    }

}

public class P{public static void Main(string[]a){foreach(char c in a[0])System.Console.Write(c+""+c);}}