题意:给定\(a[1...n]\)和\(Q\)次询问,每次统计\([L,R]\)范围内出现频率最高的数的次数 想法没啥好说的,分别统计该数出现的次数和次数出现的次数,然后莫队暴力 注意本题时间卡的很紧,map无法通过 还有一个小细节是莫队时必须把add操作全部放在前面,保证操作不会数据越界,否则会RTE(你想想为什么?) 细节太重要了 #include<iostream> #include<algorithm> #include<cstdio> #include<…

题意:给定\(a[1...n]\),\(Q\)次询问,每次统计\([L,R]\)范围内有多少个不同的数字 xjb乱写就A了,莫队真好玩 #include<iostream> #include<algorithm> #include<cstdio> #include<cstring> #include<cstdlib> #include<cmath> #include<string> #include<vector&g…

[SPOJ]Count On A Tree II(树上莫队) 题面 洛谷 Vjudge 洛谷上有翻译啦 题解 如果不在树上就是一个很裸很裸的莫队 现在在树上,就是一个很裸很裸的树上莫队啦. #include<iostream> #include<cstdio> #include<cstdlib> #include<cstring> #include<cmath> #include<algorithm> #include<set&…

题目链接:http://www.spoj.com/problems/DQUERY/ 题目大意:给定一个数组,每次询问一个区间内的不同元素的个数 解题思路:直接套莫队的裸题 #include<cstdio> #include<iostream> #include<algorithm> #include<cmath> using namespace std; ;//区间范围 ;//最大数字 ; struct node{ int l,r,id; }q[N]; bo…

COT2 - Count on a tree II #tree You are given a tree with N nodes. The tree nodes are numbered from 1 to N. Each node has an integer weight. We will ask you to perform the following operation: u v : ask for how many different integers that represent…

题目链接 http://codeforces.com/blog/entry/43230树上莫队从这里学的,  受益匪浅.. #include <iostream> #include <vector> #include <cstdio> #include <cstring> #include <algorithm> #include <cmath> #include <map> #include <set> #i…

模板.树上莫队的分块就是按dfn分,然后区间之间转移时注意一下就好.有个图方便理解http://blog.csdn.net/thy_asdf/article/details/47377709: #include<iostream> #include<cstring> #include<cmath> #include<cstdio> #include<algorithm> using namespace std; ; ],other[maxn*],…

DQUERY - D-query Given a sequence of n numbers a1, a2, ..., an and a number of d-queries. A d-query is a pair (i, j) (1 ≤ i ≤ j ≤ n). For each d-query (i, j), you have to return the number of distinct elements in the subsequence ai, ai+1, ..., aj. In…

题意与分析 题意是这样的,给定一颗节点有权值的树,然后给若干个询问,每次询问让你找出一条链上有多少个不同权值. 写这题之前要参看我的三个blog:Codeforces Round #326 Div. 2 E(树上利用倍增求LCA).Codeforces Round #340 Div. 2 E(朴素莫队)和BZOJ-1086(树的分块),然后再看这几个Blog-- 参考A:https://blog.sengxian.com/algorithms/mo-s-algorithm 参考B:https:/…

A - D-query Given a sequence of n numbers a1, a2, ..., an and a number of d-queries. A d-query is a pair (i, j) (1 ≤ i ≤ j ≤ n). For each d-query (i, j), you have to return the number of distinct elements in the subsequence ai, ai+1, ..., aj. Input L…