#include <bits/stdc++.h>

using namespace std;
ifstream fin("heapuri.in");
ofstream fout("heapuri.out");
multiset<int> h;
int n,tip,x,nr,l[200005];
int main()
{
    fin>>n;
    while(n--)
    {
        fin>>tip;
        if(tip==1)
        {
            fin>>x;
            h.insert(x);
            l[++nr]=x;


        }
        else if(tip==2)
        {
            fin>>x;

            h.erase(l[x]);
        }
        else
        {
            fout<<*h.begin()<<'\n';

        }
    }
    return 0;
}