def get_days(month: int, year: int):
    """
    Get the number of days in a month
    
    :param month: The month
    :param year: The year
    :return: The number of days in the month
    
    :Example:
    >>> get_days(2, 2020)
    29
    >>> get_days(2, 2019)
    28
    >>> get_days(4, 2020)
    30
    """
    if month == 2:
        if year % 4 == 0 and (year % 100 != 0 or year % 400 == 0):
            return 29
        return 28

    return 30 + (1 - (month % 2))