multithreaded programming and synchronization

write decree to aid synchronize a confessor and his/her learners during appointment hours. The confessor, of mode, failures to obtain?} a nap if no learners are encircling to ask inquirys; if there are learners who failure to ask inquirys, they must synchronize delay each other and delay the confessor so that (i) No past than a undoubtful calculate of learners can be in the appointment at the identical interval accordingly the appointment has scant talents. (ii) Singly one peculiar is forcible at a interval. (iii) Each learner inquiry is sanctionanceed by the confessor. (iv) No learner asks another inquiry precedently the confessor is produced sympathetic the preceding one. (v) Uninterruptedly a learner finishes exploration all his/her inquirys, he/she must liberty the appointment to constitute margin for other learners indecision beyond the confessor’s appointment. You are to contribute the forthhereafter characters: Professor(). This characters starts a tenor that runs a loop tenure AnswerStart() and AnswerDone(). See underneath for the mention of these two characters. AnswerStart() blocks when there are no learners encircling. Student(int id). This character creates a tenor that represents a new learner delay identifier id that asks the confessor one or past inquirys (the identifier absorbed to your character can be look-fored to be elder or correspondent to naught and the principal learner's id is naught). First, each learner needs to penetrate the confessor’s appointment by tenure EnterOffice(). If the appointment is already ample, the learner must continue. After a learner penetrates the appointment, he/she loops ordinary the decree QuestionStart() and QuestionDone() for the calculate of inquirys that he/she failures to ask. The calculate of inquirys is sturdy by farsighted (learner identifier modulo 4 plus 1). That is, each learner can ask between 1 and 4 inquirys, depending on the id. For copy, a learner delay id 2 asks 3 inquirys, a learner delay id 11 asks 4 inquirys and a learner delay id 4 asks a one inquiry. Uninterruptedly the learner has got the sanctionance for all his/her inquirys, he/she must ole LeaveOffice(). As a consequence, another learner indecision on EnterOffice() may be potent to profits. AnswerStart(). The confessor starts to sanctionance a inquiry of a learner. Print … Confessor starts to sanctionance inquiry for learner x. AnswerDone(). The confessor is produced sympathetic a inquiry of a learner. Print … Confessor is produced delay sanctionance for learner x. EnterOffice(). It is the learner’s hinge to penetrate the confessor’s appointment to ask inquirys. Print … Learner x penetrates the appointment. LeaveOffice(). The learner has no past inquirys to ask, so he/she libertys the confessor’s appointment. Print … Learner x libertys the appointment. QuestionStart(). It is the hinge of the learner to ask his/her direct inquiry. Print … Learner x asks a inquiry. Continue to print out the missive until it is indeed that learner's hinge. QuestionDone(). The learner is kind delay the sanctionance to his most modern inquiry. Print … Learner x is kind. Since confessor considers it severe for a learner not to continue for an sanctionance, QuestionDone() should not print anything until the confessor has perfect sympathetic the inquiry. A learner can ask singly one inquiry each interval. i.e., a learner should not look-for to ask all his/her inquirys in a adjoining conspire. In other opinion, uninterruptedly a learner gets the sanctionance to one of his/her inquirys, he/she may sanction to continue for the direct hinge if another learner starts to ask a inquiry precedently he/she does. In the aloft roll, x is a placeholder for the learner identifier. Your program must sanction one charge length parameter that represents the aggregate calculate of learners hereafter to the confessor’s appointment, and a succor charge length parameter that represents the talents of the confessor’s appointment (i.e., how multifarious learners can be in the appointment at the identical interval). For artlessness, you can presume that the Learner tenors are created at the ascending classify of their identifiers. Your program must validate the charge length parameters to constitute permanent that they are numeric values. Your program must be potent to run correctly delay any reasonpotent calculate of learners (e.g., 200) and margin talents (e.g., 8, 20, 50). Your program must appearance randomness of events. For copy, groups of learners penetrateing appointment at manifold points in the artifice. Your program must stretch a collection set-forth and limit gracefully. A decent missive should be output to evidence end of artifice, One sanctionpotent output of your program is (magnificent 3 learners and a margin talents of 2):

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