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C/C++

LeetCode: 1443-Minimum Time to Collect All Apples in a Tree 解題紀錄

題目

Given an undirected tree consisting of n vertices numbered from 0 to n-1, which has some apples in their vertices. You spend 1 second to walk over one edge of the tree. Return the minimum time in seconds you have to spend to collect all apples in the tree, starting at vertex 0 and coming back to this vertex.

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