首页 > 代码库 > Alisha's Party

Alisha's Party

2024-09-23 16:18:27   218人阅读

Alisha’s Party

Time Limit: 1 Sec  

Memory Limit: 256 MB

题目连接

http://acm.hdu.edu.cn/showproblem.php?pid=5437

Description

Princess Alisha invites her friends to come to her birthday party. Each of her friends will bring a gift of some value v, and all of them will come at a different time. Because the lobby is not large enough, Alisha can only let a few people in at a time. She decides to let the person whose gift has the highest value enter first.

Each time when Alisha opens the door, she can decide to let p people enter her castle. If there are less than p people in the lobby, then all of them would enter. And after all of her friends has arrived, Alisha will open the door again and this time every friend who has not entered yet would enter.

If there are two friends who bring gifts of the same value, then the one who comes first should enter first. Given a query n Please tell Alisha who the n?th person to enter her castle is.

Input

The first line of the input gives the number of test cases, T , where 1≤T≤15.

In each test case, the first line contains three numbers k,m and q separated by blanks. k is the number of her friends invited where 1≤k≤150,000. The door would open m times before all Alisha’s friends arrive where 0≤m≤k. Alisha will have q queries where 1≤q≤100.

The i?th of the following k lines gives a string Bi, which consists of no more than 200 English characters, and an integer vi, 1≤vi≤108, separated by a blank. Bi is the name of the i?th person coming to Alisha’s party and Bi brings a gift of value vi.

Each of the following m lines contains two integers t(1≤t≤k) and p(0≤p≤k) separated by a blank. The door will open right after the t?th person arrives, and Alisha will let p friends enter her castle.

The last line of each test case will contain q numbers n1,...,nq separated by a space, which means Alisha wants to know who are the n1?th,...,nq?th friends to enter her castle.

Note: there will be at most two test cases containing n>10000.

Output

For each test case, output the corresponding name of Alisha’s query, separated by a space.

 

Sample Input
1
5 2 3
Sorey 3
Rose 3
Maltran 3
Lailah 5
Mikleo 6
1 1
4 2
1 2 3
 

 

Sample Output
Sorey Lailah Rose
好题，直接用结构体来写的话会时间超限，不断的用sort排序，但用优先队列的话，每次只往里面添加有限的个数只需遍历一遍。
#include <iostream>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <queue>
using namespace std;
int k,m,p,pos[150007],x;
struct Come
{
    int vis;
    int num;
}come[150007];
bool cmp(Come a,Come b)
{
    return a.vis<b.vis;
}
struct Node
{
    int idx;
    int v;
    char name[210];
    friend bool operator<(Node x,Node y)
    {
        if(x.v==y.v) return x.idx>y.idx;
        return x.v<y.v;
    }
}node[150007];
int main()
{
    int T;
    scanf("%d",&T);
    while(T--)
    {
        priority_queue<Node>q;
        scanf("%d%d%d",&k,&m,&p);
        for(int i=1;i<=k;i++)
        {
            scanf("%s%d",&node[i].name,&node[i].v);
            node[i].idx=i;
        }
        for(int i=0;i<m;i++)
        {
            scanf("%d%d",&come[i].vis,&come[i].num);
        }
        sort(come,come+m,cmp);
        int ans=1;
        int inf=1;
        for(int i=0;i<m;i++)
        {
            while(inf<=come[i].vis)//放入有限个数
            {
                q.push(node[inf]);
                inf++;
            }
            while(come[i].num && !q.empty())
            {
                pos[ans++]=q.top().idx;
                q.pop();
                come[i].num--;
            }
        }
        while(inf<=k)
        {
            q.push(node[inf]);
            inf++;
        }
        while(!q.empty())
        {
            pos[ans++]=q.top().idx;
            q.pop();
        }
        for(int i=0;i<p;i++)
        {
            scanf("%d",&x);
            if(i) printf(" ");
            printf("%s",node[pos[x]].name);
        }
        printf("\n");
    }
    return 0;
}

 

Alisha's Party


联系
我们