02. Weekend or Working Day

day = input()

is_working_day = day == "Monday" or day == "Tuesday" or day == "Wednesday" or day == "Thursday" or day == "Friday"
is_weekend = day == "Sunday" or day == "Saturday"

if is_working_day:
    print("Working day")
elif is_weekend:
    print("Weekend")
else:
    print("Error")