A group of students need to use the same books to perform theirterm project. There are 28 students in the class (they haveconsecutive school numbers from 1 to 28) and all need the same 6books from the library. The students arrive at the library inrandom order. There is a Qmatic in the library to talk to one ofthe 3 librarians. The librarians always call the next number fromthe existing queue.
When a student shows in front of one of the librarians, he/sheasks the book he/she needs. The book needed is generated randomly.The librarian should check if the book was borrowed by
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