#include <fstream>
#include <vector>
#include <climits>

using namespace std;

unsigned int N;
unsigned short int type;
unsigned int x;

vector <int> a;
unsigned int i;
int minimum;

int main ()
{
    ifstream fin ("heapuri.in");
    ofstream fout ("heapuri.out");
    fin >> N;
    for (i=1; i<=N; i++)
    {
        fin >> type;
        if (type == 1)
        {
            fin >> x;
            a.push_back(x);
        }
        else if (type == 2)
        {
            fin >> x;
            a[x] = INT_MAX;
        }
        else
        {
            minimum = a[0];
            for (i=1; i<=a.size(); i++)
                if (a[i] < minimum)
                    minimum = a[i];
            fout << minimum << '\n';
        }
    }
    fin.close();
    fout.close();
    return 0;
}