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中文文档

Description

An undirected, connected tree with N nodes labelled 0...N-1 and N-1 edges are given.

The ith edge connects nodes edges[i][0] and edges[i][1] together.

Return a list ans, where ans[i] is the sum of the distances between node i and all other nodes.

Example 1:

Input: N = 6, edges = [[0,1],[0,2],[2,3],[2,4],[2,5]]

Output: [8,12,6,10,10,10]

Explanation: 

Here is a diagram of the given tree:

  0

 / \

1   2

   /|\

  3 4 5

We can see that dist(0,1) + dist(0,2) + dist(0,3) + dist(0,4) + dist(0,5)

equals 1 + 1 + 2 + 2 + 2 = 8.  Hence, answer[0] = 8, and so on.

Note: 1 <= N <= 10000

Solutions

Python3

Java

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