HDU 4006 The kth great number

Posted rootvount

tags:

篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了HDU 4006 The kth great number相关的知识,希望对你有一定的参考价值。

Xiao Ming and Xiao Bao are playing a simple Numbers game. In a round Xiao Ming can choose to write down a number, or ask Xiao Bao what the kth great number is. Because the number written by Xiao Ming is too much, Xiao Bao is feeling giddy. Now, try to help Xiao Bao.

InputThere are several test cases. For each test case, the first line of input contains two positive integer n, k. Then n lines follow. If Xiao Ming choose to write down a number, there will be an " I" followed by a number that Xiao Ming will write down. If Xiao Ming choose to ask Xiao Bao, there will be a "Q", then you need to output the kth great number.
OutputThe output consists of one integer representing the largest number of islands that all lie on one line.
Sample Input

8 3
I 1
I 2
I 3
Q
I 5
Q
I 4
Q

Sample Output

1
2
3


        
 

Hint

Xiao  Ming  won‘t  ask  Xiao  Bao  the  kth  great  number  when  the  number  of  the  written number is smaller than k. (1=<k<=n<=1000000).
#include <cstdio>
#include <iostream>
#include <cmath>
#include <algorithm>
#include <cstring>
#include <queue>

using namespace std;

#define ll long long

char ming;

int n, k, r, sum;

int main()
{
    priority_queue<int, vector<int>, greater<int> >q;
    while(~scanf("%d%d", &n, &k))
    {
        while(q.size()) q.pop();
        for(int i = 0; i<n; i++)
        {
            getchar();
            scanf("%c", &ming);
            if(ming == Q)
            {
                printf("%d
", q.top());
            }
            else
            {
                scanf("%d", &r);
                if(q.size() < k) q.push(r);
                else if(q.top()<r)
                {
                    q.pop();
                    q.push(r);
                }
            }
        }
    }
    return 0;
}

 



以上是关于HDU 4006 The kth great number的主要内容,如果未能解决你的问题,请参考以下文章

HDU 4006: The kth great number

hdu 4006 The kth great number(优先队列)

hdoj 4006 The kth great number(优先队列)

The kth great number

The kth great number(set)

The kth great number_优先队列_priority