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

namespace Salary
{
    class Salary
    {
        static void Main(string[] args)
        {
            int tab = int.Parse(Console.ReadLine());
            int salary = int.Parse(Console.ReadLine());

            int a = 150;
            int b = 100;
            int c = 50;
            int fine = 0;
            int counterA = 0;
            int counterB = 0;
            int counterC = 0;

            for (int i = 0; i < tab; i++)
            {
                string site = Console.ReadLine();

                if (site=="Facebook")
                {
                    counterA++;
                }
                if (site=="Instagram")
                {
                    counterB++;
                }
                if (site=="Reddit")
                {
                    counterC++;
                }
            fine = (a * counterA) + (b * counterB) + (c * counterC);

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