Quote:
Originally Posted by Adultnet
Each wagon can have lights on or off.
You don't know what the correct situation in the train is so there might be some wagons with lights on and then some as maybe with lights off.
so you must think of a way to be sure you made a full circle and counted all the wagons
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Pee on the floor and walk (counting) through all of the "wagons" until you arrive back at the original.