原题链接:http://acm.hdu.edu.cn/showproblem.php?pid=4217 可用线段树写,效率要高点. 这道题以前用c语言写的treap水过了.. 现在接触了c++重写一遍... 不带重复元素的插入删除第k大带垃圾回收,具体如下: #include<cstdio> #include<cstdlib> #include<iostream> #include<algorithm> typedef long long ll; ; str…

Data Structure? Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Problem Description Data structure is one of the basic skills for Computer Science students, which is a particular way of storing and organizing data…

C - Data Structure? Time Limit:5000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice id=27724" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only" style="display:inline-…

首先可以证明,点积最值的点对都是都是在凸包上,套用题解的证明:假设里两个点都不在凸包上, 考虑把一个点换成凸包上的点(不动的那个点), 不管你是要点积最大还是最小, 你都可以把那个不动的点跟原点拉一条直线, 然后把所有的点投影到这条直线上, 要找的无非就是这条直线最前面或者最后面的两个点.这两个点不可能是不在凸包上的点.同理我们可以把另一个点移到凸包上. 由于数据随机生成,那么生成凸包上的点的个数的期望是logn,而且删的点落在凸包上的概率是logn/n,所以只需要对每次删点和加点暴力重构凸包即…

Basic Data Structure Time Limit: 7000/3500 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 872    Accepted Submission(s): 236 Problem Description Mr. Frog learned a basic data structure recently, which is called stac…

Basic Data Structure Time Limit: 7000/3500 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Problem Description Mr. Frog learned a basic data structure recently, which is called stack.There are some basic operations of stack: ∙ PUSH x: p…

Mr. Frog learned a basic data structure recently, which is called stack.There are some basic operations of stack: ∙∙ PUSH x: put x on the top of the stack, x must be 0 or 1. ∙∙ POP: throw the element which is on the top of the stack. Since it is too…

题目 Source http://acm.hdu.edu.cn/showproblem.php?pid=5739 Description Professor Zhang has an undirected graph G with n vertices and m edges. Each vertex is attached with a weight wi. Let Gi be the graph after deleting the i-th vertex from graph G. Pro…

Implement a data structure supporting the following operations: Inc(Key) - Inserts a new key with value 1. Or increments an existing key by 1. Key is guaranteed to be a non-empty string. Dec(Key) - If Key's value is 1, remove it from the data structu…

Design a data structure that supports the following two operations: void addWord(word) bool search(word) search(word) can search a literal word or a regular expression string containing only letters a-z or .. A . means it can represent any one letter…