import java.text.Format;
        import java.util.Scanner;

public class anotherExercise {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int openedTabs = Integer.parseInt(scanner.nextLine());
        int salary = Integer.parseInt(scanner.nextLine());

        boolean isLostSalary = false;
        String webSite = scanner.nextLine();
        for (int i = 1; i <= openedTabs; i++) {
            switch (webSite) {
                case "Facebook":
                    salary -= 150;
                    break;
                case "Instagram":
                    salary -= 100;
                    break;
                case "Reddit":
                    salary -= 50;
                    break;
                default:
                    salary = salary;
            }
            if (salary <= 0) {
                isLostSalary = true;
                break;
            }
            webSite = scanner.nextLine();
        }
        if (!isLostSalary) {
            System.out.println(salary);
        } else {
            System.out.println("You have lost your salary.");
        }
    }
}