Ex-Googler solving 4 LeetCode mediums - Greater Sum Tree, Insert Linked List, Subrectangle Queries

In this video, I tried to solve 4 medium LeetCode questions in Python. Can I do it? This is part 1 of the series. 04:10 Partitioning Into Minimum Number Of Deci-Binary Numbers 15:40 Binary Search Tree to Greater Sum Tree 26:28 Merge Nodes in Between Zeros 31:32 Insert Greatest Common Divisors in Linked List 39:38 Subrectangle Queries