using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace _25.ExtractTagsInfo
{
    class ExtractTagsInfo
    {
        static void Main()
        {
            StreamReader reader = new StreamReader("test.html");
            string fileContent = null;
            using (reader)
            {
                fileContent = reader.ReadToEnd();
            }
            string newString = fileContent;
            int leftBrackets = fileContent.Length - fileContent.Replace("<", "").Length;
            int rightBrackets = fileContent.Length - fileContent.Replace(">", "").Length;
            if (leftBrackets == rightBrackets)
            {
                for (int i = 0; i < leftBrackets; i++)
                {
                    int lastLeftBracketIndex = newString.LastIndexOf("<");
                    int matchingRigthBracketIndex = newString.IndexOf(">", lastLeftBracketIndex);
                    if (matchingRigthBracketIndex - lastLeftBracketIndex < 1)
                    {
                        Console.WriteLine("The html file {0} is incorrect:", fileContent);
                        return;
                    }
                    else
                    {
                        newString = newString.Remove(lastLeftBracketIndex, matchingRigthBracketIndex - lastLeftBracketIndex + 1);
                    }
                }
                string[] words = newString.Split(new string[]{" ","\r\n"},StringSplitOptions.RemoveEmptyEntries);
                for (int i = 0; i < words.Length; i++)
                {
                    Console.Write("{0} ",words[i]);
                }
                Console.WriteLine();
            }
            else
            {
                Console.WriteLine("The html file:\n {0} is incorrect:", fileContent);
            }
        }
    }
}