using System;
using System.Text;
using System.Text.RegularExpressions;
using System.Linq;
using System.Diagnostics;

namespace RageQuit
{
    class Program
    {
        static void Main(string[] args)
        {
            Stopwatch timer = new Stopwatch();
            timer.Start();
            string pattern = @"(?<stringName>[^0-9]+)(?<count>\d+)";
            string input = Console.ReadLine();
            var match = Regex.Matches(input, pattern);
            var sb = new StringBuilder();
            //int count = 0;
            //string matchedElement = string.Empty;
            foreach (Match item in match)
            {
                string currentSymbol = item.Groups["stringName"].Value;
                int repeatCount = int.Parse(item.Groups["count"].Value);
                for (int i = 0; i < repeatCount; i++)
                {
                    sb.Append(currentSymbol);
                }
                //matchedElement += item;
            }
            var result = sb.ToString();
            result = result.ToUpper();
            //matchedElement = matchedElement.ToUpper();
            //string isContains = "";
            //for (int i = 0; i < matchedElement.Length; i++)
            //{
            //    char currentSymbol = matchedElement[i];
            //    if (!Char.IsDigit(currentSymbol) && !isContains.Contains(currentSymbol))
            //    {
            //        count++;
            //        isContains += currentSymbol;
            //    }
            //}
            Console.WriteLine($"Unique symbols used: {result.Distinct().Count()}");
            Console.WriteLine(result);
            timer.Stop();

        }
    }
}