#include <bits/stdc++.h>
using namespace std;
ifstream fin("heapuri.in");
ofstream fout("heapuri.out");
multiset<int> s;
int a[200005];
int n;
int main()
{
    ios_base::sync_with_stdio(0);
    fin.tie(0);
    fout.tie(0);
    int task, x, poz = 0;
    fin >> n;
    while(n--)
    {
        fin >> task;
        if(task == 1)
        {
           fin >> x;
            s.insert(x);
            a[++poz] = x;
        }
        else if(task == 2)
        {
            fin >> x;
            s.erase(s.find(a[x]));
        }
        else
            fout << *s.begin() << "\n";
    }
    return 0;
}