Discussion @ 1302. Delta-wave @ Timus Online Judge

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Discussion of Problem 1302. Delta-wave

Perhaps this would help you with WA#7

Posted by strider 4 Feb 2009 01:58

I overcame the trouble when replaced my
(int)sqrt(1.e9)
with
(int)sqrt(1.e9)+1

This was an upper bound to binary search when searching row number for N.