ex4 lab1 LSD

def leap_year(year):
    if year % 4 == 0:
        if year % 100 == 0:
            if year % 400 == 0:
                return True
            return False
        return True
    return False


if __name__ == "__main__":
    year = int(input("year="))

    print(biss_year(year))