EmojiSumator-StringAndRegex

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

public class Program
{
	public static void Main()
	{
		string msg = Console.ReadLine();
		int[] codeTokens = Console.ReadLine().Split(':').Select(int.Parse).ToArray();

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


		string emojiCode = string.Empty;

		for (int i=0; i<codeTokens.Length; i++)
		{
			int currNum = codeTokens[i];
			char toAdd = (char)currNum;
			emojiCode+= toAdd;
		}

		if (emojiCode != string.Empty)
		{
			emojiCode = emojiCode.Insert(0,":");
			emojiCode += ":";
		}

		string pattern = @"(?<=\s):[a-z]{4,}:(?=\s|,|\.|!|\?)";

		if (Regex.IsMatch(msg,pattern))
		{
			MatchCollection matches = Regex.Matches(msg,pattern);

			foreach (Match match in matches)
			{
				emojis.Add(match.Value);
			}
		}

		int totalPower = 0;

		foreach (string emoji in emojis)
		{
			for (int i=0; i<emoji.Length; i++)
			{
				char curr = emoji[i];
				if (char.IsLower(curr))
				{
					int asNum = (int)curr;
					totalPower += asNum;
				}
			}
		}

		foreach (string emoji in emojis)
		{
			if (emoji == emojiCode)
			{
				totalPower *=2;
			}
		}

		if (emojis.Count!=0)
		{
			Console.WriteLine("Emojis found: " + string.Join(", ",emojis));
		}

		Console.WriteLine("Total Emoji Power: {0}",totalPower);
	}
}