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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_start_of_day(year, month, day):
 """Get the timestamp associated to the first second of a specific day :param year: date year :type year: int :param month: date month :type month: int :param day: date day :type day: int :return: timestamp :rtype: int """

    # DST is not known in the provided date
    try:
        timestamp = time.mktime((year, month, day, 00, 00, 00, 0, 0, -1))
    except (OverflowError, ValueError):
        # Windows mktime sometimes crashes on (1970, 1, 1, ...)
        timestamp = 0.0

    return int(timestamp)