CodeChef BIBOARD: Binary Board 命题报告】的更多相关文章

这道题当时有了一点模糊的想法之后,构思了一整天-- 题意: 有一\(N \times M\)网格,每一格可以是白色或黑色.令\(B_i\)表示\(i \times i\)的纯黑子网格数量(子网格是指原网格的子矩形,必须连通),\(W_i\)表示\(i \times i\)的纯白子网格数量.给定两个非负整数数组\(CW\)和\(CB\),定义这个网格的代价为\[\sum_{i=1}^{\mathrm{min}(N, M)} CB_i \cdot B_i + CW_i \cdot W_i\] 现在网…
[LeetCode]863. All Nodes Distance K in Binary Tree 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree/description/ 题目描述: We are given a binary tree (with root no…
[LeetCode]297. Serialize and Deserialize Binary Tree 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/serialize-and-deserialize-binary-tree/description/ 题目描述: Serialization is the process of converting a data structure or object into a se…
[LeetCode]331. Verify Preorder Serialization of a Binary Tree 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/verify-preorder-serialization-of-a-binary-tree/description/ 题目描述: One way to serialize a binary tree is to use pre-order traver…
[LeetCode]662. Maximum Width of Binary Tree 解题报告(Python) 标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/maximum-width-of-binary-tree/description/ 题目描述: Given a binary tree, write a function to get the maximum width of the given tree. The width…
\(2019\)国家集训队论文<整点计数>命题报告 学习笔记/\(Min25\) 补了个大坑 看了看提交记录,发现\(hz\)的\(xdm\)早过了... 前置知识,\(HAOI\)<圆上的整点> 题目要求计算所有\((x,y),\)满足\(x^2+y^2=r^2\)的点数 这个题尽管原来做过,但是当时式子都是别人带着推的,并不知道深层原因,今天才发现这个和复数有关 先自己推一下式子 \(x^2+y^2=r^2\) \(y^2=r^2-x^2\) \(y^2=(r-x)(r+x)\…
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/description/ 题目描述 Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in…
题目要求 You need to construct a string consists of parenthesis and integers from a binary tree with the preorder traversing way. The null node needs to be represented by empty parenthesis pair "()". And you need to omit all the empty parenthesis pa…
题目要求 In a binary tree, the root node is at depth 0, and children of each depth k node are at depth k+1. Two nodes of a binary tree are cousins if they have the same depth, but have different parents. We are given the root of a binary tree with unique…
题目要求 Invert a binary tree. 题目分析及思路 给定一棵二叉树,要求每一层的结点逆序.可以使用递归的思想将左右子树互换. python代码 # Definition for a binary tree node. # class TreeNode: #     def __init__(self, x): #         self.val = x #         self.left = None #         self.right = None class S…