Student could to drink both 0 or infinity mugs.

he can't drink 0
because and also can't drink infinity mugs.
because when he comes to the bar he only drink an ale of beer.

count like:
test
5 40

5-10-20-40
he drinks 3 ale of beer.


Edited by author 29.03.2012 20:32

Drunk student would repeatedly enter pub N (and it divides N)

Thanks!!!