using System;

using System.Text;

using System.Collections.Generic;

using System.Linq;

using System.Text.RegularExpressions;

​

public class Program

   {

      public void VinSolutions(string[] args)

       {

​

       }

       public static void Main(string[] args)

       {

          string str;

           Console.WriteLine("Enter your sentence:");

           str = Console.ReadLine();

          string[] sentence = Regex.Split(str, @"\W+");

           List<string> newsentence = new List<string>();

           StringBuilder builder = new StringBuilder();

           foreach (string word in sentence)

           {

               newsentence.Add(word);

​

               string newword = null;

               if (word.Length > 1)

               {

                   int distinctCount = 0;

                   int k = word.Length;

                   int samecharcount = 0;

                   int count = 0;

​

                   for (int i = 1; i < k - ; i++)

                   {

​

                       if (word.ElementAt(i) != word.ElementAt(i + 1))

                       {

​

                           count++;

​

                       }

                       else

                       {

                           samecharcount++;

                       }

                   }

                   distinctCount = count + samecharcount;

​

                       char firstChar = word[0];

                       char lastChar = word[word.Length - 1];

                       newword = String.Concat(firstChar, distinctCount.ToString(), lastChar);

                       Console.Write(newword+" ");

                }

​

               else

               {

​

                   Console.Write(builder.Append(word).Append(" "));

               }

​

           }

       }

   }