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Discussion of Problem 1002. Phone Numbers

Please Help!!!
Posted by Lebedev_Nicolay[Ivanovo SPU] 24 Apr 2009 03:28
How to solve this problem with building a graph??? I cannot understand.
Re: Please Help!!!
Posted by Lebedev_Nicolay[Ivanovo SPU] 5 Jul 2009 19:41
I understood solution of this problem, but now I have Crash access vialation at test #4. Why???