using System;

​

namespace MixItUp04

{

    class Program

    {

        static void Main(string[] args)

        {

            string word1 = Console.ReadLine();

            string word2 = Console.ReadLine();

            if (word1.Length < word2.Length)

                {

                    string temp = word2;

                    word2 = word1;

                    word1 = temp;   

                }

            Console.WriteLine(word1);

​

            for (int i = 0; i < word1.Length; i++)

            {

                if (i < word1.Length)

                {

                    Console.Write(word1[i]);

                }

​

                if (i < word2.Length)

                {

                    Console.Write(word2[i]);

                }

            }

        }

    }

}

​

​

​

​