tabs_open = int(input())
salary = int(input())

facebook_fine=0
instagram_fine=0
reddit_fine=0
copy_salary=salary


for i in range (1, tabs_open+1):
    name_website = input()
    if name_website=="Facebook":
        facebook_fine+=150

    elif name_website=="Instagram":
        instagram_fine+=100

    elif name_website=="Reddit":
        reddit_fine+=50

    all = facebook_fine + instagram_fine + reddit_fine
    if salary-all<=0:
        break


all=facebook_fine+instagram_fine+reddit_fine
difference = abs(salary-all)
if salary <=all:
    print("You have lost your salary")
else:
    print(f"{difference}")