Round 1:

Both the questions were directly asked from leetcode.
I fumbled on the first question and took around 45 minutes to solve it.
First Question:
https://leetcode.com/problems/maximum-product-of-splitted-binary-tree/
My solution:
https://leetcode.com/problems/maximum-product-of-splitted-binary-tree/discuss/1903169/Python-3-or-Clean-and-concise

Solved the question 2 in 5 minutes.
Second question:
https://leetcode.com/problems/longest-valid-parentheses/