KiKi's K-Number HDU - 2852 （树状数组求第K大，O(N)算法）

KiKi's K-Number

 HDU - 2852 

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 to container 

Pop: Pop element of a given e from container 

Query: Given two elements a and k, query the kth larger number which greater than a in container; 

Although Kiki is very intelligent, she can not think of how to do it, can you help her to solve this problem? 

Input

Input some groups of test data ,each test data the first number is an integer m (1 <= m <100000), means that the number of operation to do. The next m lines, each line will be an integer p at the beginning, p which has three values: 
If p is 0, then there will be an integer e (0
If p is 1, then there will be an integer e (0
If p is 2, then there will be two integers a and k (0

Output

For each deletion, if you want to delete the element which does not exist, the output "No Elment!". For each query, output the suitable answers in line .if the number does not exist, the output "Not Find!".

Sample Input

5
0 5
1 2
0 6
2 3 2
2 8 1
7
0 2
0 2
0 4
2 1 1
2 1 2
2 1 3
2 1 4

Sample Output

No Elment!
6
Not Find!
2
2
4
Not Find!

题意：

要求我们设计一个数据结构，他有着插入，删除，查找大于A的第K大的数三种功能；

思路：

插入和删除都没什么好书的，至于大于A的第k大不妨转换一下求第sum(A)+K大（sum(A)为比A小的值的数量），然后直接套第K大的模板就可以了

AC代码：

#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include

 

转载于:https://www.cnblogs.com/fly-white/p/10092747.html