1120. Maximum Average Subtree
https://leetcode.com/problems/maximum-average-subtree
Description
Given the root
of a binary tree, return the maximum average value of a subtree of that tree. Answers within 10-5
of the actual answer will be accepted.
A subtree of a tree is any node of that tree plus all its descendants.
The average value of a tree is the sum of its values, divided by the number of nodes.
Example 1:
Example 2:
Constraints:
The number of nodes in the tree is in the range
[1, 104]
.0 <= Node.val <= 105
ac
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