#include<iostream>
#include<stdio.h>
#include<vector>
#include<set>
using namespace std;
vector <int> a;
multiset <int> heap;
int n,i,op,x;
int main()
{
	freopen("heapuri.in","r",stdin);
	freopen("heapuri.out","w",stdout);
	scanf("%d",&n);
	for(i=0;i<n;i++)
	{
		scanf("%d",&op);
		if(op==1)
		{
			scanf("%d",&x);
			a.push_back(x);
			heap.insert(x);
			continue;
		}
		if(op==2)
		{
			scanf("%d",&x);
			heap.erase(heap.find(a[x-1]));
			continue;
		}
		printf("%d\n",*heap.begin());
	}
	return 0;
}