import java.util.Scanner;

public class Demo {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int tabs = Integer.parseInt(scanner.nextLine());
        int salary = Integer.parseInt(scanner.nextLine());

        for (int tab = 1; tab <= tabs; tab++) {
            String siteName = scanner.nextLine();
            if ("Facebook".equals(siteName)) {
                salary -= 150;
            } else if ("Reddit".equals(siteName)) {
                salary -= 100;
            } else if ("Instagram".equals(siteName)) {
                salary -= 50;
            }
            //проверка дали имаме заплата
            if (salary <= 0) {
                System.out.println("You have lost your salary.");
                break;
            }
        }
        System.out.println(salary);
    }
}