A. Link/Cut Tree time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Programmer Rostislav got seriously interested in the Link/Cut Tree data structure, which is based on Splay trees. Specifica
Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never differ by more than 1. /** * Definition for binary tree *
[题解] 我们要做的就是把这些数排序.排序的时候判断两个数是否交换的方法,就是把这两个数相接形成两个长度相同的数字,比较这两个数字的大小. #include<cstdio> #include<algorithm> #include<cstring> #define N 200010 #define rg register #define LL long long using namespace std; int n,m; ]; inline int read(){ ,f
题目: 报纸页数X星球日报和我们地球的城市早报是一样的,都是一些单独的纸张叠在一起而已.每张纸印有4版.比如,某张报纸包含的4页是:5,6,11,12,可以确定它应该是最上边的第2张报纸.我们在太空中捡到了一张X星球的报纸,4个页码分别是:1125,1126,1727,1728请你计算这份报纸一共多少页(也就是最大页码,并不是用了几张纸哦)?请填写表示总页数的数字. 注意:你提交的应该是一个整数,不要填写任何多余的内容或说明性文字. 代码: #include<iostream> using n
NSJSONReadingMutableContainers Specifies that arrays and dictionaries are created as mutable objects. // 创建可变的数组或字典 接收 NSJSONReadingMutableLeaves Specifies that leaf strings in the JSON object graph are created as instances of NSMutableStrin