心情浮躁

明明知道自己该怎么做
却静不下心
浪费了时间
生活就这样一天天
怎么过
怎么办
期望
当前的任务是跳
就是这个目标

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1386. Cinema Seat Allocation

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1395. The Barycentre Of The Trees

Description 中文 English For a multi-branch tree, if there is a node  R  with  R  as the root, and the largest sub-tree of all its sub-trees has the least number of nodes, the node  R  is said to be the center of gravity of the tree. Now give you a multi-branch tree with  n  nodes. Find the center of gravity of this tree. If there are multiple centers of gravity, return the one with the lowest number. x[i], y[i] represents the two points of the i-th edge. 2 <= n <= 10^5 1 <= x[i], y[i] <= n Have you met this question in a real interview?    Yes Problem Correction Example Example 1: Given x = `[1]`, y = `[2]`, return `1`. Input: [1] [2] Output: 1 Explanation: Both 1 and 2 can be center of gravity, but the number of 1 is the smallest. Example 2: Given x = `[1,2,2]`, y = `[2,3,4]`, return `2`. Input: [1,2,2] [2,3,4] Output: 2 Explanation: 2 is the center of gravity. Co...
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