#today = "Sun"
today = input("please enter the day (3 letters): ")
strike = False
my_recitation = "Mon"


if today == "Sun":
    print("A new week!!")
    if strike: #if strike == True
        print("Stay home")
    else:
        print("Lecture in intro to CS!")
elif today == "Wed":
    print("Another lecture in intro to CS!")
elif today == my_recitation:
    print("Go to recitation!")
elif today=="Mon" or today=="Tue" or today=="Thu" \
     or today=="Fri" or today=="Sat":
    print("no intro to CS for you today...")
else:
    print("Not a day")

print("Goodbye")