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1873 看病要排队(优先队列)

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纪念下第一次优先队列题~

#include<stdio.h>
#include<string.h>
#include<string>
#include<iostream>
#include<queue>
using namespace std;
struct node
{
	int p,num;
	bool operator < (const node& a) const
	{
		return p<a.p || (p==a.p&&num>a.num);
	}
};
string ch;
int main()
{
	int i,j,k,n,a,b,tmp;
	while(scanf("%d",&n)!=-1)
	{
		priority_queue<node>q[4];
		for(i=1;i<4;i++)
			while(!q[i].empty())
				q[i].pop();
	   int cou=1;
	   node x;
	   while(n--)
	   {
		   cin>>ch;
		   if(ch=="IN")
		   {
			   scanf("%d%d",&a,&x.p);
			   x.num=cou++;
			   q[a].push(x);
		   }
		   else
		   {
			   scanf("%d",&a);
			   if(!q[a].empty())
			   {
				   x=q[a].top();
				   q[a].pop();
				   printf("%d\n",x.num);
			   }
			   else
				   printf("EMPTY\n");
		   }
	   }
	}
	return 0;
}


作者:u010690055 发表于2013-7-16 11:11:02 原文链接
阅读:37 评论:0 查看评论

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