C. Kefa and Park time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Kefa decided to celebrate his first big salary by going to the restaurant. He lives by an unusual park. The park is a roote
Given a binary tree containing digits from 0-9 only, each root-to-leaf path could represent a number. An example is the root-to-leaf path 1->2->3 which represents the number 123. Find the total sum of all root-to-leaf numbers. Note: A leaf is a node