/************************************************************ 题目: Frequent values(poj 3368) 链接: http://poj.org/problem?id=3368 题意: 给出n个数和Q个询问(l,r),对于每个询问求出(l,r)之 间连续出现次数最多的次数 算法: RMQ 思路: 借助数组f[i].表示第i位前面有f[i]个相同的数.对于 每个区间(l,r).暴力求前面几个相同的数.然后在用RMQ 求后面…

                                                     Frequent values Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 15229   Accepted: 5550 Description You are given a sequence of n integers a1 , a2 , ... , an in non-decreasing order. In…

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://poj.org/problem? id=3368 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, dete…

#include<cstdio> #include<cstring> ; const int inf=0x3f3f3f3f; inline int max(int x,int y) { return x>y?x:y; } int a[maxn]; int left[maxn]; int right[maxn]; int num[maxn]; ]; void init() { memset(a,,sizeof a); memset(left,-,sizeof left); me…

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,…

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 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…

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>…

一句话,多次查询区间的众数的次数 注意多组数据!!!! RMQ方法: 预处理 i 及其之前相同的数的个数 再倒着预处理出 i 到不是与 a[i] 相等的位置之前的一个位置, 查询时分成相同的一段和不同的一段 (RMQ) 但是要注意 to[i] 大于查询范围的情况, 以及RMQ时 x < y 的情况!! AC代码: #include<iostream> #include<cstdio> #include<cstring> #include<cstdlib>…