Curse you, amichael! No! No, I am not going to try to solve this problem tonight. I'm going to do ourdoings.com coding on the train ride home. I am not goin

Curse you, amichael! No! No, I am not going to try to solve this problem tonight. I'm going to do ourdoings.com coding on the train ride home. I am not going to think about prisoners, light bulbs and distributed systems. I'll check in tomorrow and see if someone else has posted the answer, but I won't try to come up with it myself. You tempt me, but I resist. :-)