hdu 1789 Doing Homework again

Doing Homework again

Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 4046    Accepted Submission(s): 2342

Problem Description

Ignatius has just come back school from the 30th ACM/ICPC. Now he has a lot of homework to do. Every teacher gives him a deadline of handing in the homework. If Ignatius hands in the homework after the deadline, the teacher will reduce his score of the final test. And now we assume that doing everyone homework always takes one day. So Ignatius wants you to help him to arrange the order of doing homework to minimize the reduced score.

 

Input

The input contains several test cases. The first line of the input is a single integer T that is the number of test cases. T test cases follow.
Each test case start with a positive integer N(1<=N<=1000) which indicate the number of homework.. Then 2 lines follow. The first line contains N integers that indicate the deadlines of the subjects, and the next line contains N integers that indicate the reduced scores.

 

Output

For each test case, you should output the smallest total reduced score, one line per test case.

 

Sample Input

  
  

   
   3
3
3 3 3
10 5 1
3
1 3 1
6 2 3
7
1 4 6 4 2 4 3
3 2 1 7 6 5 4
  
  

 

Sample Output

  
  

   
   0
3
5
  
  
  
  

   
    
  
  
  
  

   
   贪心法。按扣分由大到小排序，扣分相同的按期限由小到大排序。。。选择一个作业，在最后期限那天安排工作，若最后期限那天到第一天都被安排了工作，则要扣掉那个作业的分数..
  
  
  
  

   
    
  
  
  
  

   
   AC代码：
  
  
  
  

   
   
#include <iostream>
#include <algorithm>
#include <cstring>
using namespace std;


struct homeword
{
    int de,sc;
}h[1005];

bool cmp(homeword a,homeword b)
{
    if(a.sc!=b.sc) return a.sc>b.sc;
    return a.de<b.de;
}
int main()
{
    int t,n,j,vis[1005];
    cin>>t;
    while(t--)
    {
        cin>>n;
        for(int i=0;i<n;i++)
        cin>>h[i].de;
        for(int i=0;i<n;i++)
        cin>>h[i].sc;
        sort(h,h+n,cmp);
        int min=0;
        memset(vis,0,sizeof(vis));
        for(int i=0;i<n;i++)
        {
            for(j=h[i].de;j>0;j--)
            if(!vis[j])
            {
                vis[j]=1;
                break;
            }
            if(j==0)
            min+=h[i].sc;
        }

       cout<<min<<endl;


    }
    return 0;
}