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Discussion of Problem 1033. Labyrinth

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Finally I got AC!!! IF you have problems, read this text (I HAD WA5) DonNTU Team (Akulshin, Belikov, Trofimenko) 29 Aug 2006 15:03
I had this problems:
3
.##
###
##.
answer is 36.
If you have any problems write me john_chip<dog>mail.ru
You can write russian messages
But,it's written in the question,only those wall will be wallpapered which are visible from one end.in you example if we enter from top left...the down right cell is not visible...so ans should be 18....correct me if i am wrong??
I am 10 years late, but I hope you do read this, in the problem it states both the first and last cell are 'entrances', so you can enter via both cells. Cheers!