#include <iostream>
#include <fstream>
#include <set>
#define NMAX 200005
using namespace std;
int n, i, a, b, nr, v[NMAX];
multiset <int> heap;
int main()
{
    ifstream cin("heapuri.in");
    ofstream cout("heapuri.out");
    cin>>n;
    for(i=1; i<=n; i++)
    {
        cin>>a;
        if(a==1)
        {
            cin>>v[++nr];
            heap.insert(v[nr]);
        }
        else if(a==2)
        {
            cin>>b;
            heap.erase(heap.find(v[b]));
        }
        else
            cout<<*heap.begin()<<'\n';
    }
    return 0;
}