H - Can you answer these queries? HDU - 4027   思路: 一眼思路:线段树区间修改,区间查询. 发现bug:区间的sqrt无法实现,所以还是相当于对区间的每一个点进行单点修改,所以一定会超时. 后来经过仔细观察: 可以发现,由于所有的邪恶战舰的耐力值之和小于263 (You can assume that the sum of all endurance value is less than 2 63. ) 所以每艘战舰的耐力值最多被开平方6次,不会超…

有一列数,(都是2^63范围内的并且都大于0的整数),现在呢有一些操作, 操作 0 可以把区间LR内的所有数都变成它的平方根数(是取整后的),操作 1 可以就是求区间LR内的和了. 分析:因为这个操作是把一个数变成平方根,所以显得略棘手,不过如果仔细演算的话会发现一个2^64数的平方根开8次也就变成了 1,所以也更新不了多少次,所以可以每次更新到底.. 注意:给的X Y大小未知,会出现X > Y的情况 ***********************************************…

Can you answer these queries II Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 https://www.spoj.com/problems/GSS2/ Description Being a completist and a simplist, kid Yang Zhe cannot solve but get Wrong Answer from most of the OI problems. And he refuse…

点我看题目 题意 :N头奶牛,Q次询问,然后给你每一头奶牛的身高,每一次询问都给你两个数,x y,代表着从x位置上的奶牛到y位置上的奶牛身高最高的和最矮的相差多少. 思路 : 刚好符合RMQ的那个求区间最大最小值,所以用RMQ还是很方便的.就是一个RMQ的模板题,基本上书上网上都有. RMQ基础知识 RMQ算法举例 #include <stdio.h> #include <string.h> #include <math.h> #include <iostream…

2482: [Spoj1557] Can you answer these queries II Time Limit: 20 Sec  Memory Limit: 128 MBSubmit: 145  Solved: 76[Submit][Status][Discuss] Description 给定n个元素的序列. 给出m个询问:求l[i]~r[i]的最大子段和(可选空子段). 这个最大子段和有点特殊:一个数字在一段中出现了两次只算一次. 比如:1,2,3,2,2,2出现了3次,但只算一次,…

POJ 3264 题意:n个数,问a[i]与a[j]间最大值与最小值之差. 总结:看了博客,记下了模板,但有些地方还是不太理解. #include<iostream> #include<cstdio> #include<cstdlib> #include<algorithm> #include<cstring> #include<string> #include<cmath> #include<queue> #…

Can you answer these queries? Time Limit:2000MS     Memory Limit:65768KB     64bit IO Format:%I64d & %I64u Submit Status Description A lot of battleships of evil are arranged in a line before the battle. Our commander decides to use our secret weapon…

描述 A lot of battleships of evil are arranged in a line before the battle. Our commander decides to use our secret weapon to eliminate the battleships. Each of the battleships can be marked a value of endurance. For every attack of our secret weapon,…

A lot of battleships of evil are arranged in a line before the battle. Our commander decides to use our secret weapon to eliminate the battleships. Each of the battleships can be marked a value of endurance. For every attack of our secret weapon, it…

Can you answer these queries III SPOJ - GSS3 这道题和洛谷的小白逛公园一样的题目. 传送门: 洛谷 P4513 小白逛公园-区间最大子段和-分治+线段树区间合并(单点更新.区间查询) 代码: #include<bits/stdc++.h> using namespace std; typedef long long ll; ; #define lson l,m,rt<<1 #define rson m+1,r,rt<<1|1…