Welcome to the Python screen.
The question is on your right: Maximum Path Sum in Tree. Read through the requirements first.
Run and submit your code as often as you need. You also have five interviewer messages this session - want to talk through your approach, or are you ready to start coding?
Given the root of a binary tree, return the maximum sum of any path. A path may start and end at any nodes, must follow parent-child edges, and cannot revisit a node.