REGEX

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

namespace _2.Emoji_Sumator
{
    class Program
    {
        static void Main(string[] args)
        {
            string theText = Console.ReadLine();
            var emojiCode = Console.ReadLine().Split(':').Select(int.Parse).ToList();
            var myRegEx = new Regex(@" (:[a-z]{4,}:)[,.?! ]");
            var listOfEmojis = new List<string>();
            int totalEmojiPoints = 0;
            var isMatch = myRegEx.IsMatch(theText);
            StringBuilder newStrBuild = new StringBuilder();
            for (int i = 0; i < emojiCode.Count; i++)
            {
                newStrBuild.Append((char)emojiCode[i]);
            }

            if (isMatch)
            {
                var matches = myRegEx.Matches(theText);
                foreach (Match emojis in matches)
                {
                    listOfEmojis.Add(emojis.Groups[1].Value);
                }
                for (int i = 0; i < listOfEmojis.Count; i++)
                {
                    string theEmoji = listOfEmojis[i];
                    for (int k = 0; k < theEmoji.Length; k++)
                    {
                        if (char.IsLetter(theEmoji[k]))
                        {
                            totalEmojiPoints += (int)theEmoji[k];
                        }
                    }

                }
            }
            for (int i = 0; i < listOfEmojis.Count; i++)
            {
                if (listOfEmojis[i].Contains(newStrBuild.ToString()))
                {
                    totalEmojiPoints *= 2;
                    break;
                }
            }
            if (listOfEmojis.Count > 0)
            {
                Console.WriteLine("Emojis found: " + string.Join(", ", listOfEmojis));
            }

            Console.WriteLine($"Total Emoji Power: {totalEmojiPoints}");

        }
    }
}