Minimum Sum Time Limit: 16000/8000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3769    Accepted Submission(s): 872 Problem Description You are given N positive integers, denoted as x0, x1 ... xN-1. Then give you

求两个数列的子列的交集 Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://acm.uestc.edu.cn/#/problem/show/1104 Description 给两个数列A, B,长度分别为n1, n2,保证A中每个元素互不相同,保证B中每个元素互不相同..进行Q次询问,每次查找A[l1...r1]和B[l2..r2]的交集 集合 大小是多少.. 比如 A = {1,2,3,4,5,6,7},B = {7,6,5,4,3,2,1}

题目链接:  http://acm.hdu.edu.cn/showproblem.php?pid=4417 题目大意:给定一个区间,以及一个k值,求该区间内小于等于k值的数的个数.注意区间是从0开始的. 解题思路: 首先这题线段树可以解.方法是维护一个区间最大值max,一个区间点个数s,如果k>max,则ans=s+Q(rson),否则ans=Q(lson). 然后也可以用求区间第K大的划分树来解决,在对原来求第K大的基础上改改就行,方法如下: Build方法同第K大. 对于Query: ①左区

Distance on the tree DSM(Data Structure Master) once learned about tree when he was preparing for NOIP(National Olympiad in Informatics in Provinces) in Senior High School. So when in Data Structure Class in College, he is always absent-minded about

题意:从某个区间内最多选择k个数,使得和最大 思路:首先题目给定的数有负数,如果区间前k大出现负数,那么负数不选和更大,于是对于所有最优选择,负数不会出现,所以用0取代负数,问题便转化为区间的前k大数和. 划分树: [1  6  3  8  5  4  7  2] [6  8  5  7][1  3  4  2] [8  7][6  5][3  4][1  2] [8][7][6][5][4][3][2][1] 把快排的结果从上至下依次放入线段树,就构成了划分树,划分的意思就是选定一个数,把原序

题意 就是求区间第k大,区间 不互相包含. 尝试用treap解决一下 第k大的问题. #include <set> #include <map> #include <cmath> #include <ctime> #include <queue> #include <stack> #include <cstdio> #include <string> #include <vector> #inclu

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4417   Problem Description Mario is world-famous plumber. His “burly” figure and amazing jumping ability reminded in our memory. Now the poor princess is in trouble again and Mario needs to save his love

给你N个数,有两种操作 1:给区间[a,b]内的所有数都增加X 2:询问区间[a,b]能被7整除的个数 输入描述 Input Description 第一行一个正整数n,接下来n行n个整数,再接下来一个正整数Q,表示操作的个数. 接下来Q行每行若干个整数.如果第一个数是add,后接3个正整数a,b,X,表示在区间[a,b]内每个数增加X,如果是count,表示统计区间[a,b]能被7整除的个数 输出描述 Output Description 对于每个询问输出一行一个答案 样例输入 Sample

解题关键:划分树模板题. #include<cstdio> #include<cstring> #include<algorithm> #include<cstdlib> #include<iostream> #include<cmath> using namespace std; typedef long long ll; ; ][MAXN],sorted[MAXN],toleft[][MAXN]; void build(int l

Super Mario Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3625    Accepted Submission(s): 1660 Problem Description Mario is world-famous plumber. His “burly” figure and amazing jumping ability

题意:在区间中找一个数,求出该区间每个数与这个数距离的总和,使其最小 找的数字是中位数(若是偶数个,则中间随便哪个都可)接着找到该区间比此数大的数的总和 区间中位数可以使用划分树,然后在其中记录:每层的 1-i 中划分到左区间的总和 划分树: 划分树是一种基于线段树的数据结构.主要用于快速求出(在log(n)的时间复杂度内)序列区间的第k大值 . 划分树和归并树都是用线段树作为辅助的,原理是基于快排 和归并排序 的. 划分树的建树过程基本就是模拟快排过程,取一个已经排过序的区间中值,然后把小于中

和向左密集比起来向右密集只需要进行小小的额修改,就是更新的时候从右往左更新.. 自己写的被卡死时间.不知道怎么回事,和网上博客的没啥区别.. /* 给定一个n个数的序列a 每次询问区间[l,r],求出去重后区间中每个数的第一次出现的位置pi pi构成一个新的升序,求这个新数组的中位数 要求强制在线,询问[l,r]根据上一个询问的答案进行加密,形成新的询问 t1=(l+ansi-1) % mod n + 1 t2=(r+ansi-1) % mod n + 1 l=min(t1,t2),r=max(

For the k-th number, we all should be very familiar with it. Of course,to kiki it is also simple. Now Kiki meets a very similar problem, kiki wants to design a container, the container is to support the three operations. Push: Push a given element e

复杂度:$O(nlog^3n)$ #include<cstdio> #include<cstring> #include<algorithm> #include<cstdlib> #include<iostream> #include<cmath> #define MAXN 100000 using namespace std; ][MAXN],a[MAXN]; void build(int deep,int l,int r){ if

题目来源:POJ 1442 Black Box 题意:输入xi 输出前xi个数的第i大的数 思路:试了下自己的treap模版 #include <cstdio> #include <cstring> #include <cstdlib> #include <ctime> using namespace std; struct Node { Node *ch[2]; int r; int v; int s; Node(){} Node(int v): v(v)

(累了,这题做了很久!) Life Forms Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 8683   Accepted: 2375 Description You may have wondered why most extraterrestrial life forms resemble humans, differing by superficial traits such as height, colour,

题目链接 http://acm.hdu.edu.cn/showproblem.php?pid=2665 代码: //#include<bits/stdc++.h> #include<iostream> #include<cmath> #include<algorithm> #define fi first #define se second #define INF 0x3f3f3f3f #define fio ios::sync_with_stdio(fal

Super Mario Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3313    Accepted Submission(s): 1548 Problem Description Mario is world-famous plumber. His "burly" figure and amazing jumping a

整体二分,将询问与初值一起放入一个结构体里,然后每次二分判断询问在哪边,树状数组维护,时间复杂度O((n+Q)lognlogMAX_a[i] 代码 #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> #include<cmath> #include<cstring> using namespace std; const int MAXN =

Kth number Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 12984    Accepted Submission(s): 3962 Problem Description Give you a sequence and ask you the kth big number of a inteval.   Input The

取板粗   好东西来的 1.(HDOJ2665)http://acm.hdu.edu.cn/showproblem.php?pid=2665 (POJ2104)http://poj.org/problem?id=2104 (POJ2761)http://poj.org/problem?id=2761 题意:求区间第K大,主席树模板题 #include<cstdio> #include<cstring> #include<algorithm> using namespac