Introduction - If you have any usage issues, please Google them yourself
Given two binary trees, find them all nodes greater than or equal to 2 maximum subtree. A sub binary tree, the binary tree is removed and some of the nodes connected to the node with the obtained binary tree branches. Let T be a binary tree, R for its subtree, if there is no binary S, such that R is S, and S is the sub-tree subtree of T, then R is called a subtree of T max.