def isLeapYear(year):
    if year % 4 == 0 and year % 100 != 0 or year % 400 == 0:
        print('{0}是闰年'.format(year))
        return True

    else:
        print('{0}不是闰年'.format(year))
        return False

year=eval(input('请输入年份：'))
isLeapYear(year)