Task 5 Hands of Cards (Dictionaries)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Hands_of_Cards
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<string, List<string>> players = new Dictionary<string, List<string>>();


            int multiplier = 0;
            int mainvalue = 0;
            int totalValue = 0;
            string name = "";
            string[] hand = Console.ReadLine()
                .Split(new char[] { ':', ' ', ',' },
                StringSplitOptions.RemoveEmptyEntries)
                .ToArray();

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

            while (hand[0]!="JOKER")
            {
                name = hand[0];
                cards = hand.Skip(1).ToList();
                cards = cards.Distinct().ToList();



                if (!players.ContainsKey(name))
                {
                    players.Add(name, cards);
                }
                else
                {
                    players[name].AddRange(cards);
                    players[name] = players[name].Distinct().ToList();
                }

                hand = Console.ReadLine()
                .Split(new char[] { ':', ' ', ',' },
                StringSplitOptions.RemoveEmptyEntries)
                .ToArray();
            }

            foreach (var player in players)
            {
                foreach (var card in player.Value)
                {
                    char second = card[card.Length - 1];


                    switch (second)
                    {
                        case 'S':
                            multiplier = 4;
                            break;
                        case 'H':
                            multiplier = 3;
                            break;
                        case 'D':
                            multiplier = 2;
                            break;
                        case 'C':
                            multiplier = 1;
                            break;

                    }

                    char first = card[0];

                    switch (first)
                    {
                        case  'J':
                            mainvalue = 11;
                            break;
                        case 'Q':
                            mainvalue = 12;
                            break;
                        case 'K':
                            mainvalue = 13;
                            break;
                        case 'A':
                            mainvalue = 14;
                            break;
                        case '1':
                            mainvalue = 10;
                            break;
                        default:
                            string newString = first.ToString();
                            mainvalue = int.Parse(newString);
                            break;
                    }
                    totalValue += multiplier * mainvalue;

                }
                Console.WriteLine("{0}: {1}", player.Key, totalValue);
                totalValue = 0;
                multiplier = 0;
                mainvalue = 0;
            }
        }
    }
}