Leetcode #1443: Minimum Time to Collect All Apples in a Tree

Whenever you are at a node, say p, you will collect all apples in p’s subtree before returning back to the original root. This will avoid traveling the same path multiple times. …. Because you have the list of edges, construct a better representation – adjacency list – of the tree. … More Leetcode #1443: Minimum Time to Collect All Apples in a Tree