Too Bad I Can't Get Paid Real Money to Do This

I need to make schedules for 80 people.

We're running five mini-courses. Each professor will teach two sections of his/her mini-course. We have four time-slots available for the courses and three classrooms.

The participants will each attend two mini-courses. They've picked their top three choices.

Oh, and because of room capacities, I have to divide the 80 people into the A-group and the B-group whose schedules need to be coordinated.

This is my weekend project. Too bad it's not my job.