# This program reads a year and says if it is a leap year

def main():
    year = input ("Enter a year: " )
    if year % 400 == 0:
        IsLeapYear = True
    elif year % 100 == 0:
        IsLeapYear = False
    elif year % 4 == 0:
        IsLeapYear = True
    else:
        IsLeapYear = False

    if IsLeapYear:
        print "%d is a leap year" % year
    else:
        print "%d is not a leap year" % year

main()