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

namespace Salary
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            double salary = double.Parse(Console.ReadLine());
            for (int i = 0; salary > 0 && i < n; i++)
            {
                string sites = Console.ReadLine();

                if (sites == "Facebook")
                {
                    salary -= 150.00;
                }
                if (sites == "Instagram")
                {
                    salary -= 100.00;
                }
                if (sites == "Reddit")
                {
                    salary -= 50.00;
                }

            }

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

        }
    }
}