05.NetherRealms

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

namespace _05.NetherRealms
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] input = Console.ReadLine()
                .Split(',')
            .Select(x => x.Trim())
            .ToArray();

            Regex regexHealth = new Regex(@"[^\d+\-*,\/.]");
            Regex regexDamage = new Regex(@"[+\-]?\d+\.?\d*");
            Regex actionRegex = new Regex(@"[*\/]");

            SortedDictionary<string, double[]> demons = new SortedDictionary<string, double[]>();

            foreach (var demon in input)
            {
                MatchCollection matchHealth = regexHealth.Matches(demon);
                int health = matchHealth
                    .Select(x => char.Parse(x.Value))
                    .Sum(x => x);

                MatchCollection matchesDamage = regexDamage.Matches(demon);
                double baseDemage = matchesDamage
                    .Select(x => double.Parse(x.Value))
                    .Sum();

                MatchCollection actionMatches = actionRegex.Matches(demon);

                foreach (Match actionMatch in actionMatches)
                {
                    if (actionMatch.Value == "*")
                    {
                        baseDemage *= 2;
                    }
                    else
                    {
                        baseDemage /= 2;
                    }
                }

                demons.Add(demon, new Double[] {health, baseDemage});
            }

            foreach (var demon in demons)
            {
               Console.WriteLine($"{demon.Key} - {demon.Value[0]} health, {demon.Value[1]:f2} damage");
            }
        }
    }
}