线段树区间更新维护最小值...记得下放标记... 如果线段树上的一个完整区间被修改,那么最小值和最大值增加相应的值后不变, 会改变是因为一部分改变而另外一部分没有改变所以维护一下就好. 询问的时候也要记得下放标记... 数据结构快忘了,贴个板. #include<bits/stdc++.h> using namespace std; typedef long long ll; ; struct Seg { ll lazy; ll Min; }tr[maxn<<]; int a[ma…
转载请注明出处:http://blog.csdn.net/u012860063 题目链接:http://codeforces.com/problemset/problem/52/C You are given circular array a0, a1, ..., an - 1. There are two types of operations with it: inc(lf, rg, v) - this operation increases each element on the segm…
6356.Glad You Came 题意就是给你一个随机生成函数,然后从随机函数里确定查询的左右区间以及要更新的val值.然后最后求一下异或和就可以了. 线段树,区间最大值和最小值维护一下,因为数据有点大,不剪枝就会超时.(默默吐槽,剪了枝照样超时) 因为太菜,交了24遍也是没过,TLE,WA,RE轮流来,而且感觉这题有毒,删一个没用的变量就会WA... 百度了一下题解,发现有人和我写的几乎一模一样,但是人家的就可以过,我的死也过不去. 人家的博客:HDU6356 Glad You Came(…
水博客,水一水. Horizontally Visible Segments Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 6290 Accepted: 2287 Description There is a number of disjoint vertical line segments in the plane. We say that two segments are horizontally visible…
RMQ with Shifts 时间限制(普通/Java):1000MS/3000MS 运行内存限制:65536KByte 描述 In the traditional RMQ (Range Minimum Query) problem, we have a static array A. Then for each query (L, R) (L<=R), we report the minimum value among A[L], A[L+1], …, A[R]. Note that…