MagicWord

using System;

using System.Collections.Generic;


    class Program
    {

        static void Main(string[] args)
        {



            int n = int.Parse(Console.ReadLine());

            List<string> words = new List<string>();

            for (int i = 0; i < n; i++) {

                string enteredWord = Console.ReadLine();
                words.Add(enteredWord);

            }

           /*     words.Add("nakov");
            words.Add("wrote");
            words.Add("this");
            words.Add("problem");*/

            /*words.Remove("academy");
            words.Insert(0, "academy");

            Console.WriteLine(words[0]);
            Console.WriteLine(words[1]);
            Console.WriteLine(words.Count);*/


            for (int i = 0; i < words.Count; i++) {

                int pos = words[i].Length % (n + 1);

                if (pos < words.Count) {
                    string currentWord = words[i];
                    words.Remove(words[i]);
                    words.Insert(pos, currentWord);



                }


            }


            //Izchisliavame dyljinata na naj dylgata duma


            int bestLenght = int.MinValue;
            string strToCheck = " ";
            for (int i = 0; i < words.Count; i++)
            {
                strToCheck = words[i];

                if (strToCheck.Length > bestLenght)
                {

                    bestLenght = strToCheck.Length;


                }



            }


            //Pravim vsichki taka

            for (int i = 0; i < words.Count; i++)
            {

                string currentWord = words[i];

                for (int j = 0; j <= bestLenght; j++)
                {

                    if (currentWord.Length < j)
                    {

                        currentWord += "#";

                    }




                }

                words[i] = currentWord;



            }



            //Pochvame da syzdavame magicheskata duma

            int f = 0;
            string wordToCheck = " ";
            string magicWord = "";

            for (int i = 0; i < bestLenght; i++) {

                for (int j = 0; j < words.Count; j++) {
                    wordToCheck = words[j];
                    if (wordToCheck[f] != '#') {
                        magicWord += wordToCheck[f];

                    }



                }

                f++;



            }




            Console.WriteLine(magicWord);



        }
    }