using System using System Collections Generic using System Linq using

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

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            // Представим, что здесь хранятся твои карты и очки
            List<string> cards = new List<string>();
            int playerPoints = 0;
            foreach(string s in cards)
            {
                playerPoints+=CheckCard(s);
            }
        }
        public static int CheckCard(string card)
        {
            int e = 0;
            int playerspoints = 0;
            for (int i = 54; i <= 57; i++)
            {
                if (card[0] == i) { playerspoints += e; return playerspoints; }
                e++;
            };
            switch (card[0])
            {
                case 'z':
                    {
                        playerspoints += 10;
                        break;
                    }
                case 'v':
                    {
                        playerspoints += 2;
                        break;
                    }
                case 'd':
                    {
                        playerspoints += 3;
                        break;
                    }
                case 'k':
                    {
                        playerspoints += 4;
                        break;
                    }
                case 't':
                    {
                        playerspoints += 11;
                        break;
                    }
            }
            return playerspoints;
        }
    }
}