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Discussion of Problem 1156. Two Rounds

I Wa on Test 9, Is there anytining special?
Posted by Cheryl 2 Apr 2006 11:02
I Wa on Test 9, Is there anytining special?
Help me, thank you!
Re: I Wa on Test 9, Is there anytining special?
Posted by SkorKNURE 22 Sep 2008 18:44
Yes. Look at the statement carefully: N <= 50 and M <= 100! How can it be without pair duplication? In 9 test one pair defined twice, so check it whether your present graph with vertices lists