using System;

class CypherRoulette
{
    static void Main()
    {
        uint inputRows = uint.Parse(Console.ReadLine());

        string cypherString = "", currString, prevString = "";
        string concatMode = "NormalMode";

        while (inputRows > 0)
        {
            currString = Console.ReadLine();

            if (prevString == currString)
            {
                cypherString = string.Empty;

                if (prevString != "spin")
                    inputRows--;

                continue;
            }

            if (currString != "spin")
                inputRows--;

            else
            {
                if (concatMode == "SpinMode")
                    concatMode = "NormalMode";

                else
                    concatMode = "SpinMode";

                prevString = currString;
                continue;
            }

            switch (concatMode)
            {
                case ("NormalMode"):
                    cypherString = cypherString + currString;
                    break;

                case ("SpinMode"):
                    cypherString = currString + cypherString;
                    break;
            }

            prevString = currString;
        }

        Console.WriteLine(cypherString);
    }
}