{ "data": { "question": { "questionId": "2531", "questionFrontendId": "2440", "boundTopicId": null, "title": "Create Components With Same Value", "titleSlug": "create-components-with-same-value", "content": "

There is an undirected tree with n nodes labeled from 0 to n - 1.

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You are given a 0-indexed integer array nums of length n where nums[i] represents the value of the ith node. You are also given a 2D integer array edges of length n - 1 where edges[i] = [ai, bi] indicates that there is an edge between nodes ai and bi in the tree.

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You are allowed to delete some edges, splitting the tree into multiple connected components. Let the value of a component be the sum of all nums[i] for which node i is in the component.

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Return the maximum number of edges you can delete, such that every connected component in the tree has the same value.

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Example 1:

\n\"\"\n
\nInput: nums = [6,2,2,2,6], edges = [[0,1],[1,2],[1,3],[3,4]] \nOutput: 2 \nExplanation: The above figure shows how we can delete the edges [0,1] and [3,4]. The created components are nodes [0], [1,2,3] and [4]. The sum of the values in each component equals 6. It can be proven that no better deletion exists, so the answer is 2.\n
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Example 2:

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\nInput: nums = [2], edges = []\nOutput: 0\nExplanation: There are no edges to be deleted.\n
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Constraints:

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Most standard library headers are already included automatically for your convenience.

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Python 2.7.12.

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For Map/TreeMap data structure, you may use sortedcontainers library.

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Python 3.10.

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Rust 1.58.1

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PHP 8.1.

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