Perfect_Girlfriend_вариант2

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

namespace _04.Perfect_Girlfriend
{
    class Program
    {
        static void Main(string[] args)
        {
            //First Part

            string[] userInput = Console.ReadLine().Split('\\');

            string dayOfWeek = userInput[0];

            int sumOfdigits = 0;

            //string stop = "";
            int counter = 0;

            while (!userInput.Contains("Enough dates!"))
            {
                switch (dayOfWeek)
                {
                    case "Monday": sumOfdigits += 1; break;
                    case "Tuesday": sumOfdigits += 2; break;
                    case "Wednesday": sumOfdigits += 3; break;
                    case "Thursday": sumOfdigits += 4; break;
                    case "Friday": sumOfdigits += 5; break;
                    case "Saturday": sumOfdigits += 6; break;
                    case "Sunday": sumOfdigits += 7; break;
                    case "Enough dates!": break;

                }

                //Second Part

                int digitsOfTelephoneNumber = int.Parse(userInput[1]);

                while (digitsOfTelephoneNumber > 0)
                {
                    int digits = digitsOfTelephoneNumber % 10;
                    sumOfdigits += digits;
                    digitsOfTelephoneNumber /= 10;
                }

                //Third Part

                string stre = userInput[2];
                char letter = stre.Last();
                string onlyNumbers = userInput[2].TrimEnd(letter);

                int numbers = int.Parse(onlyNumbers);
                int bra = numbers * letter;

                sumOfdigits += bra;

                //Last Part

                string str = userInput[3];
                int strLength = userInput[3].Length;
                char firstLetter = str.First();
                int result = str.First() * strLength;
                sumOfdigits += -result;

                if (sumOfdigits < 6000)
                {
                    Console.WriteLine("Keep searching, {0} is not for you.", userInput[3]);
                }
                else
                {
                    Console.WriteLine("{0} is perfect for you.", userInput[3]);
                    counter++;
                }


                if (userInput[0]=="Enough dates!")
                {
                    break;
                }
                else
                {
                    userInput = Console.ReadLine().Split('\\');
                    dayOfWeek = userInput[0];

                    sumOfdigits = 0;
                }


            }

            if (counter > 0)
            {
                Console.WriteLine(counter);
            }

            else
            {
                Console.WriteLine(counter);
            }
        }
    }
}