/*

​

input aaabbcccc output 3a2b4c

​

​

*/

using System;

using System.Collections.Generic; 

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter the string");

        string input =Console.ReadLine();

        // "aaabbcccc";

            while (input.Length > 0)

            {

                int count = 0;

                for (int j = 0; j < input.Length; j++)

                {

                    if (input[0] == input[j])

                    {

                        count++;

                    }

                    //Console.WriteLine(input[j]);

                }

                //Console.WriteLine(input[j] +count);

                 Console.Write(count);

                 Console.Write(input[0]);

               // Console.WriteLine();

                input = input.Replace(input[0].ToString(), string.Empty);

            }

            //Console.ReadLine();

    }

}