ReplaceTag

using System;
using System.Collections.Generic;

namespace _10.ReplaceATag
{
    class Program
    {
        static void Main(string[] args)
        {
            string text = Console.ReadLine();
            List<string> result = new List<string>();
            while(text != "end")
            {
                if(text.Contains("<a")&&(text.Contains(">")))
                {
                    text = text.Replace("<a", "[URL");
                    text = text.Replace(">", "]");
                }
                if (text.Contains("</a") && (text.Contains(">")))
                {
                    text = text.Replace("</a", "[/URL");
                    text = text.Replace(">", "]");
                }
                result.Add(text);
                text = Console.ReadLine();
            }
            foreach (var item in result)
            {
                Console.WriteLine(item);
            }
        }
    }
}