"华为杯" 武汉大学21级新生程序设计竞赛 https://ac.nowcoder.com/acm/contest/31620#question D.和谐之树 思路:披着线段树外皮的二分.把区间逐层二分.注:要统计能到达的深度,深度相同时优先走右边(比赛的时候就是因为这个没过) 代码 #include <iostream> #include <algorithm> using namespace std; typedef long long ll; int t;…
这个专栏开始介绍一些<ACM国际大学生程序设计竞赛题解>上的竞赛题目,读者可以配合zju/poj/uva的在线测评系统提交代码(今天zoj貌似崩了). 其实看书名也能看出来这本书的思路,就是一本题解书,简单暴力的通过题目的堆叠来提升解决编程问题的能力. 那么下面开始探索吧. poj1037: Description Background For years, computer scientists have been trying to find efficient solutions to…
比赛链接: http://202.197.224.59/OnlineJudge2/index.php/Contest/problems/contest_id/36 题目来源: 2014嘉杰信息杯ACM/ICPC湖南程序设计邀请赛暨第六届湘潭市程序设计竞赛 × Problem A A simple problem (求N % 1 + N % 2 + ....+ N % N, 待补) ? Problem B Path √ Problem C Range (单调栈) √ Problem…
pku 1107: Description Weird Wally's Wireless Widgets, Inc. manufactures an eclectic assortment of small, wireless, network capable devices, ranging from dog collars, to pencils, to fishing bobbers. All these devices have very small memories. Encrypti…