using System;

namespace coding
{
    class Program
    {
        static void Main(string[] args)
        {
            string num = Console.ReadLine();
            int length = num.Length;

            for (int i = length - 1; i >= 0; i--)
            {

                char currentChar = num[i];
                int currentInt = int.Parse(currentChar.ToString());

                if (currentInt == 0)
                {
                    Console.WriteLine("ZERO");
                    continue;
                }

                for (int j = 1; j <= currentInt; j++)
                {

                    Console.Write((char)(currentInt + 33));
                }
                Console.WriteLine();
            }
        }
    }
}