林克砍树。 如图: 前置知识 \(\texttt{Splay}\) \(\uparrow\) 这个算非常重要的,一定要先学会 \(\texttt{Splay}\) 。 因为 \(\texttt{LCT}\) 中的 \(\texttt{Splay}\) 与我们平时写的还不 ...
You are asked to cut off trees in a forest for a golf event. The forest is represented as a non negative D map, in this map: represents theobstaclecan t be reached. represents thegroundcan be walked ...
2018-01-29 21:13 1 3813 推荐指数:
林克砍树。 如图: 前置知识 \(\texttt{Splay}\) \(\uparrow\) 这个算非常重要的,一定要先学会 \(\texttt{Splay}\) 。 因为 \(\texttt{LCT}\) 中的 \(\texttt{Splay}\) 与我们平时写的还不 ...
忘光啦 /dk /dk 本来 rotate 都会打错的我现在终于会打啦 于是 splay 打错了 基础要点 实链剖分 重链剖分是我们很熟悉的一个结构,它的优秀之处在于可以将树上问 ...
原题地址:https://oj.leetcode.com/problems/unique-binary-search-trees/ 题意: Given n, how many structurally unique BST's (binary ...
Given n, generate all structurally unique BST's (binary search trees) that store values 1...n. For example,Given n = 3, your program should return ...
原题地址:https://oj.leetcode.com/problems/unique-binary-search-trees-ii/ 题意:接上一题,这题要求返回的是所有符合条件的二叉查找树,而上一题要求的是符合条件的二叉查找树的棵数,我们上一题提过,求个数一般思路是动态规划,而枚举的话 ...
rooted trees, those with minimum height are called m ...
题目: Given n, how many structurally unique BST's (binary search trees) that store values 1...n? For example, Given n = 3, there are a total ...
题目: Given n, generate all structurally unique BST's (binary search trees) that store values 1...n. For example, Given n = 3, your program should ...