using System;

namespace StringConcatenation
{
    class Program
    {
        static void Main()
        {
            char delimeter = char.Parse(Console.ReadLine());
            string evenOrOdd = Console.ReadLine();
            int n = int.Parse(Console.ReadLine());

            string sentence = null;

            for (int i = 1; i <= n; i++)
            {
                string word = Console.ReadLine();

                if (evenOrOdd == "odd")
                {
                    if (i % 2 != 0)
                    {
                        sentence = sentence + word + delimeter;
                    }
                }
                else
                {
                    if (i % 2 == 0)
                    {
                        sentence = sentence + word + delimeter;
                    }
                }
            }

            if (sentence.EndsWith(delimeter))
            {
              sentence = sentence.Remove(sentence.Length - 1);
                Console.WriteLine(sentence);
            }
            else
            {
                Console.WriteLine(sentence);
            }
        }
    }
}