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6 1 2 1 3 3 1 3 1 4 3
3 4
#include<iostream>
#include<algorithm>
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<string>
#include<math.h>
#include<queue>
#include<stack>
#include<map>
#define INF 0x3f3f3f3f
#define eps 1e-6
using namespace std;
priority_queue<int, vector<int>, greater<int> > q;///从小到大排列
int n;
int main()
{
while(scanf("%d",&n)!=EOF)
{
while(!q.empty())
{
q.pop();
}
int x,y;
int flag = 0;
int maxx;
for(int i=0;i<n;i++)
{
scanf("%d",&x);
if(x == 1)
{
scanf("%d",&y);
if(flag == 0)
{
flag = 1;
maxx = y;
}
if(maxx < y)
{
maxx = y;
}
q.push(y);
}
else if(x == 2)
{
if(q.size() > 0)
{
int tt = q.top();
while(!q.empty() && q.top() == tt)
{
q.pop();
}
}
if(q.size() <= 0)
{
flag = 0;
}
}
else
{
if(q.size() > 0)
{
printf("%d\n",maxx);
}
else
{
printf("0\n");
}
}
}
}
return 0;
}版权声明:本文为博主原创文章,如有特殊需要请与博主联系 QQ : 793977586。
HDU 5349 MZL's simple problem(优先队列)
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原文地址:http://blog.csdn.net/yeguxin/article/details/47297537