I need some help writing operators for this assignment:

Consider the problem of devising a plan to complete the courses required to complete your Computer Science degree in a typical ground-based classroom environment (i.e. not online) a) Write operators (in PDDL page 369 of the AIMA text) for this type of plan. You must consider such things as: Course prerequisites Cannot be in two places at once . Some class times and locations will conflict (e.g. a Natural Science laboratory may be scheduled at the same time as a CS class, thus requiring you to shift your schedule) Consider the problem of devising a plan to complete the courses required to complete your Computer Science degree in a typical ground-based classroom environment (i.e. not online) a) Write operators (in PDDL page 369 of the AIMA text) for this type of plan. You must consider such things as: Course prerequisites Cannot be in two places at once . Some class times and locations will conflict (e.g. a Natural Science laboratory may be scheduled at the same time as a CS class, thus requiring you to shift your schedule)