题目:http://poj.org/problem?id=3368 题意:给定n个数,顺序为非下降,询问某个区间内的数出现最多的数的 出现次数.. 大白书上的 例题..算是RMQ变形了, 对 原数组重新分段,并标记相同的个数为 该段的数值,然后RMQ... #include <iostream> #include <cstdio> #include <cstring> #include <cstdlib> #include <algorithm>…

Frequent values Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 13516   Accepted: 4971 Description You are given a sequence of n integers a1 , a2 , ... , an in non-decreasing order. In addition to that, you are given several queries cons…

Frequent values Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 14742   Accepted: 5354 Description You are given a sequence of n integersa1 , a2 , ... , an in non-decreasing order. In addition to that, you are given several queries consi…

Frequent values TimeLimit:3000Ms , ... , an in non-decreasing order. In addition to that, you are given several queries consisting of indices i and j (1 ≤ i ≤ j ≤ n). For each query, determine the most frequent value among the integers ai , ... , aj.…

题目大意:在一个长度为n的不降序列中,有m次询问,每次询问(i,j)表示在区间(i,j)中找出出现次数最多的元素的出现次数. 题目分析:因为序列有序,可以将序列分段,并且记录每段的元素个数.每一个元素所属的段num(i).每一个元素所属段的左端点l(i)及右端点r(i).那么对于每次询问: ans(i,j)＝max(max(r(i)-i+1,j-l(j)+1),rmq(num(i)+1,num(j)-1)). ans(i,j)＝r-j+1 (如果i与j属于同一段) 代码如下: # include…

Description You are given a sequence of n integers a1 , a2 , ... , an in non-decreasing order. In addition to that, you are given several queries consisting of indices i and j (1 ≤ i ≤ j ≤ n). For each query, determine the most frequent value among t…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1806 题目大意:给你一个非降序排列的整数数组,你的任务是对于一系列的询问,(i,j),回答序列中出现次数最多的数的个数: 如下图所示: AC代码: #include<iostream> #include<algorithm> #include<cstdio> #include<cstring> #include<queue> #include<…

[题目链接] http://poj.org/problem?id=3368 [题目大意] 有一个有序序列,要求区间查询出现次数最多的数 [题解] 维护每个区间左端点和右端点,以及左右的长度,还有区间的答案 每次线段合并的时候,对区间数据进行合并即可. [代码] #include <cstdio> #include <algorithm> using namespace std; const int N=100010; struct data{int a,b,l,r,val;}T[N…

Description You are given a sequence of n integers a1 , a2 , ... , an in non-decreasing order. In addition to that, you are given several queries consisting of indices i and j (1 ≤ i ≤ j ≤ n). For each query, determine the most frequent value among t…

传送门:http://poj.org/problem?id=3368 Frequent values Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 23016   Accepted: 8060 Description You are given a sequence of n integers a1 , a2 , ... , an in non-decreasing order. In addition to that,…