Office Hours before exam

Because of the exam next Wednesday I'll hold office hours on Monday from 5:00 to 6:00 instead of Wednesday. The Tuesday office hours are unchanged, from 3:30 to 5:00. For those of you who don't know where the Physical Plant Building is, here are the directions. If you can't make it to office hours, you can pick up all old homeworks and solutions in a box outside my office, after the Monday office hours.