PROBLEM IN UNDERSTANDING PROPAGATING TREE(383C)

Правка en1, от javacoder1, 2015-10-23 12:57:07

I am having problem understanding how we are utilising Binary Indexed tree to solve the problem.The DFS part is clear as well as the notion of levels. But i am unable to understand how BIT is used. http://mirror.codeforces.com/contest/383/problem/C link.

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en1 Английский javacoder1 2015-10-23 12:57:07 297 Initial revision (published)