#include <fstream>
#include <set>
#define DIM 200010

using namespace std;

ifstream fin("heapuri.in");
ofstream fout("heapuri.out");

int x, y, v[DIM], n, op;
multiset<int> heap;

int main()
{
    fin >> n;

    for(int i = 1; i <= n; i ++)
    {
        fin >> op;

        if(op == 1)
        {
            fin >> x;
            heap.insert(x);
            v[++y] = x;
        }
        else
            if(op == 2)
            {
                fin >> x;
                heap.erase(v[x]);
            }
            else
            {
                fout << *heap.begin() << '\n';
            }

    }

    return 0;
}