摘要：
Problem StatementCucumber Boy likes drawing pictures. Today, he plans to draw a picture using a very simple graphics editor.The editor has the following functions:The canvas is an infinite two-dimensional grid of pixels.There are only two colors: black, and transparent. These are denoted 'B' 阅读全文
摘要：
Given a binary tree, find the maximum path sum.The path may start and end at any node in the tree.For example:Given the below binary tree, 1 / \ 2 3Return6. 1 /** 2 * Definition for binary tree 3 * struct TreeNode { 4 * int val; 5 * TreeNode *left; 6 * TreeNode *rig... 阅读全文