using System;
using System.Globalization;
class PriceChangeAlert
{
    static void Main()
    {
        string delimeter = Console.ReadLine();
        int numberOfElements = int.Parse(Console.ReadLine());

        string boxOfElements = string.Empty;        

        for (int i = 0; i < numberOfElements; i++)
        {
            string elements = Console.ReadLine();

            boxOfElements += elements + delimeter;
        }

        int remove = delimeter.Length;
        Console.WriteLine(boxOfElements.Remove(boxOfElements.Length - remove, remove));
    }
}