print("Please enter your year")
userYear = int(input())

leapyear = userYear % 4
year400 = userYear % 400
year100 = userYear % 100

if year400 == 0:
    print("Leap year")
elif year100 == 0:
    print("Not a leap year")
elif leapyear ==0:
    print("Leap year")
else:
    print("Not a leap year")