A student needs to take a certain number of courses to graduate, and these courses have prerequisites that must be followed. assume that all courses are offered every semester and that the student can take an unlimited number of courses. Given a list of courses and their prerequisites, compute a schedule that requires the minimum number of semesters.

Yourr C++ algorithm should output the min number of semesters required to graduate. Assume that a student needs to take at least m courses to graduate.