You're trapped in a maze. There is a way out. Path junctions are all 3-way.
If you use the strategy of always taking the path going right, what will happen?
(Note: This problem is deliberarely vague.)
(In reply to
re(10): About the by Cheradenine)
I wouldn't necessarily claim that it is 1/n, since I don't have a function for the number of loops per node. I'd be willing to say that it is something along the order of 1/O(n), though.