import java.util.Scanner;

public class SalaryExerciseTask7 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int openTabs = Integer.parseInt(scanner.nextLine());
        double salary = Double.parseDouble(scanner.nextLine());

        boolean isSalaryLost = false;

        for (int i = 0; i < openTabs; i++) {
            String siteName = scanner.nextLine();

            if ("Facebook".equals(siteName)) {
                salary -= 150;

            } else if ("Instagram".equals(siteName)) {
                salary -= 100;

            } else if ("Reddit".equals(siteName)) {
                salary -= 50;

            }
            if (salary <= 0){
                isSalaryLost = true;
                break;
            }
        }
        if (isSalaryLost){
            System.out.println("You have lost your salary.");
        } else {
            System.out.printf("%.0f", salary);
        }
    }
}