MagicWords

namespace Problem2
{
    using System;
    using System.Collections.Generic;
    using System.Text;

    class MagicWords
    {
        static void Main()
        {
            int numberOfWords = int.Parse(Console.ReadLine());
            string[] words = new string[numberOfWords];
            var upgradeWords = new List<string>();
            for (int i = 0; i < numberOfWords; i++)
            {
                string currentWord = Console.ReadLine();
                words[i] = currentWord;
                upgradeWords.Add(currentWord);
            }
            for (int i = 0; i < upgradeWords.Count; i++)
            {
                string currentWord = upgradeWords[i];
                int position = (upgradeWords[i].Length % (numberOfWords + 1));
                upgradeWords.Remove(upgradeWords[i]);
                upgradeWords.Insert(position,currentWord );
            }

            int maxLenght = 0;
            for (int i = 0; i < upgradeWords.Count; i++)
            {
                int currentLenght = upgradeWords[i].Length;
                if (currentLenght > maxLenght)
                {
                    maxLenght = currentLenght;
                }
            }
            StringBuilder result = new StringBuilder();
            for (int i = 0; i < maxLenght; i++)
            {
                for (int j = 0; j < upgradeWords.Count; j++)
                {
                    if (upgradeWords[j].Length > i)
                    {
                        result.Append(upgradeWords[j][i]);
                    }

                }
            }

            Console.WriteLine(result.ToString());
        }
    }
}