year = int(input('Enter a year: '))
leap = 0

if year % 4 == 0:
    leap = 1

if year % 100 == 0:
    leap = 0

if year % 400 == 0:
    leap = 1

if leap == 0:
    print('The year', year, 'is not a leap year.')
else:
    print('The year',year,'is a leap year.')