A题:题意:给定国际象棋king的坐标,求能向几个方向移动分析:处理一下边界情况,其他的都是8 #include <iostream> #include <cstdio> #include <cstring> #include <string> #include <vector> #include <algorithm> #include <set> #include <map> #include <bi…

原题传送门 我承认,比赛的时候在C题上卡了好久(最后也不会),15min水掉D后(最后还FST了..),看到E时已经只剩15min了.尽管一眼看出是离散化+线段树的裸题,但是没有时间写,实在尴尬. 赛后先照习惯码出线段树,提交上去WA4???看了好久没看出问题,怎么调都不对.这时TJW忽悠我:"我写的可持久化线段树啊,不用离散化了啊."我信了,码出主席树(实话说确实不用想那么多了,无脑动态开点就行了),提交上去TLE18???回头一问TJW:"我FST了啊."我:(…

题目链接 CF915E Physical Education Lessons 题解 动态开点线段树 代码 /* 动态开点线段树 */ #include<cstdio> #include<cstring> #include<algorithm> inline int read() { int x = 0,f = 1; char c = getchar() ; while(c < '0' || c > '9')c = getchar(); while(c <…

原题传送门:CF915E Physical Education Lessons 前置芝士:珂朵莉树 窝博客里对珂朵莉树的介绍 没什么好说的自己看看吧 这道题很简单啊 每个操作就是区间赋值,顺带把总和修改一下,这样会快多了,所以我又成了洛咕最优解第二(好像比23forever dalao快,玄学???) #pragma GCC optimize("O3") #include <bits/stdc++.h> #define IT set<node>::iterato…

2.Early Education of Children 儿童的早期教育 (1) In bringing up children,every parent watches eagerly the child's acquisition of each new skill—the first spoken words,the first independent steps,or the beginning of reading and writing.It is often tempting t…

1.The Necessity of a Broad Education 全面教育的必要性 (1) According to a survey,which was based on the responses of over 188,000 students,today's traditional-age college freshman are "more materialistic[məˌtɪəriəˈlɪstɪk] and less altruistic"than at any…

More than 90 percent of China's office workers consider on-the-job training and continuing education to be essential in improving their capabilities and skills, with nearly 73 percent saying they have further education and training plans, a survey ha…

题意: Alex高中毕业了,他现在是大学新生.虽然他学习编程,但他还是要上体育课,这对他来说完全是一个意外.快要期末了,但是不幸的Alex的体育学分还是零蛋! Alex可不希望被开除,他想知道到期末还有多少天的工作日,这样他就能在这些日子里修体育学分.但是在这里计算工作日可不是件容易的事情: 从现在到学期结束还有 n 天(从 1 到 n 编号),他们一开始都是工作日.接下来学校的工作人员会依次发出 q 个指令,每个指令可以用三个参数 l,r,k 描述: 如果 k=1,那么从 l 到 r (包含端…

Hi , Hope all is well. Summer is right around the corner, and the Khan Academy team is excited to spend the next few months growing our library of content and improving our site before the start of the next school year. With everything on our site be…

[题目]E. Physical Education Lessons [题意]10^9范围的区间覆盖,至多3*10^5次区间询问. [算法]线段树 [题解]每次询问至多增加两段区间,提前括号分段后线段树. #include<cstdio> #include<cctype> #include<set> #include<algorithm> using namespace std; int read(){ ,t=; ; +c-';}while(isdigit(c…