def is_valid_rtws(rtws):
    """
        Given a clock-valuation timedwords with reset-info, determine its validation.
    """
    if len(rtws) == 0 or len(rtws) == 1:
        return True
    current_clock_valuation = rtws[0].time
    reset = rtws[0].reset
    for rtw in rtws[1:]:
        if reset == False and rtw.time < current_clock_valuation:
            return False
        else:
            reset = rtw.reset
            current_clock_valuation = rtw.time
    return True