hdu1873优先队列

 1 #include<stdio.h>
 2 #include<queue>
 3 using namespace std;
 4 struct node
 5 {
 6     int id;
 7     int val;
 8     friend bool operator< (node a,node b)
 9     {
10         if(a.val!=b.val)
11         return a.val<b.val;
12         else
13         {
14             return a.id>b.id;
15         }
16     }
17 };
18 int n;
19 int main()
20 {
21     int i,j;
22     char s[100];
23     int num,set;
24     while(scanf("%d",&n)!=EOF)
25     {
26         num=1;
27         node temp;
28         priority_queue<node>q[5];
29         for(i=1;i<=n;i++)
30         {
31             scanf("%s",s);
32             if(s[0]=='I')
33             {
34                 scanf("%d %d",&set,&temp.val);
35                 temp.id=num++;
36                 q[set].push(temp);
37             }
38             else
39             {
40                 scanf("%d",&set);
41                 if(q[set].empty())
42                 {
43                     printf("EMPTY
");
44                     continue;
45                 }
46                 node exm=q[set].top();
47                 q[set].pop();
48                 printf("%d
",exm.id);
49             }
50         }
51     }
52 }