#include <bits/stdc++.h>
using namespace std;
ifstream fin("heapuri.in");
ofstream fout("heapuri.out");
multiset<int> ms;
vector<int> v;
int main()
{
    int n, q;
    fin >> n;
    while(n--)
    {
        int a;
        fin >> q;
        if(q==1)
        {
            fin >> a;
            v.push_back(a);
            ms.insert(a);
        }
        else if(q==2)
        {
            fin >> a;
            ms.erase(ms.find(v[a-1]));
        }
        else
            fout << *ms.begin() << '\n';
    }
    return 0;
}