Difficulty in understanding the approach for solving Spoj DQuery
I was trying to solve this problem on SPOJ:
http://www.spoj.com/problems/DQUERY/
But after a few hours of trying to solve it, I googled for a possible
hint. I found one approach described here:
http://apps.topcoder.com/forums/;jsessionid=5A69961AF7DF7FBB00FDFE13B80B5D2E?module=Thread&threadID=627423&start=0&mc=13
But I am not able to understand it properly. Can anybody help me in
understanding the approach.
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