using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace übung
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = "aabdbbddcccccc";

            Console.WriteLine(input);
            Console.WriteLine(comp(input)+"\n"+ext(comp(input)));
            Console.ReadLine();
        }
        static string comp(string x)
        {
            string temp = "";
            int count = 0;
            for (; x.Length > 0;)
            {
                count = 1;
                for(int i = 0; i < x.Length; i++)
                {
                    if (i + 1 < x.Length)
                    {
                        if (x[i] != x[i + 1])
                        {
                            temp += count + x[i].ToString();
                            x = x.Remove(0, count);
                            i = x.Length;
                        }
                        else
                            count++;
                    }
                    else
                    {
                        temp += count + x[i].ToString();
                        x = x.Remove(0, count);
                    }

                }
            }
            return temp;
        }
        static string ext(string x)
        { int count = 0,sum=0;
            string temp = "";
            for(int i = 0; i < x.Length; i++)
            {
                try
                {
                    Convert.ToInt32(x[i].ToString());
                    count++;
                }
                catch
                {
                    sum= Convert.ToInt32(x.Substring(0, count));
                    temp += new string(x[count], sum);
                    x = x.Remove(0, count + 1);
                    count = 0;
                    i = -1;
                }
            }
            return temp;
        }
    }
}