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

namespace ConsoleApplication183
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            double salary = double.Parse(Console.ReadLine());
            //double finalSelary = 0;

            for (int i = 1; i <= n; i++)
            {
                string browser = Console.ReadLine();

                switch (browser)
                {
                    case "Facebook":
                        salary = salary - 150;
                    break;

                    case "Instagram":
                        salary = salary - 100;
                    break;

                    case "Reddit":
                        salary = salary - 50;
                    break;
                }

                if (salary <= 0)
                {
                    Console.WriteLine($"You have lost your salary.");
                    break;
                }
            }
            if (salary > 0)
            {
                Console.WriteLine(salary);
            }

        }
    }
}