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First, I agree with several of the comments expressed so far: it's not clear in.

} There is an undirected tree where each vertex is numbered from to, and each contains a data sum of a tree is the sum of all its nodes' data values.

If an edge is cut, two smaller trees are formed. The difference between two trees is the absolute value of the difference in their sums. Given a tree, determine which edge to cut so that the resulting trees have a minimal difference Estimated Reading Time: 2 mins. Cut Tree. Cut Tree. Problem. Submissions. Leaderboard. Discussions. Editorial. Given a tree T with n nodes, how many subtrees (T') of T have at most K edges connected to (T - T')?

Input Format. The first line contains two integers n and K followed by n-1 lines each containing two integers a & b denoting that there's an edge between a & stumpmulching.clubted Reading Time: 50 secs.

Solution to HackerRank problems. Contribute to derekhh/HackerRank development by creating an account on GitHub. HackerRank / Go to file Go to file T; Go to line L; Copy path Cannot retrieve contributors at this time.

54 lines (50 sloc) Bytes Raw Blame //. For those who are stuck, here are hints: 1. Dont think of it as a Tree problem. Approach it as a GRAPH. 2. Use first run of DFS to compute a value (not telling what it is:p) that you think will help you solve the problem. 3. The real breakthrough happens during the second run of stumpmulching.clubted Reading Time: 6 mins.

This repository contains my solutions to easy and medium questions in Hackerrank. Hope that helps. - haotian-wu/Hackerrank_solutions. Given a tree T with n nodes, how many subtrees (T') of T have at most K edges connected to (T - T') We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies. This problem is a simple application of Recursion and Depth First Traversal of a tree.

You need to solve this problem using post order traversal technique, considering the tree as a rooted tree.

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Let's take the example given in the question. Cons.

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