#include <fstream>
#include <set>
#include <vector>
using namespace std;
ifstream cin("heapuri.in");
ofstream cout("heapuri.out");
int n;
multiset<int> M;
vector<int> pozitie;
int t,x;
int k;
int main()
{
    cin>>n;
    pozitie.resize(n+1);
    k=1;
    for(int i=0;i<n;i++)
    {
        cin>>t;
        switch(t)
        {
            case 1:
            {
                cin>>x;
                M.insert(x);
                pozitie[k++]=x;
                break;
            }
            case 2:
            {
                cin>>x;
                M.erase(M.lower_bound(pozitie[x]));
                break;
            }
            case 3:
            {
                cout<<*M.begin()<<'\n';
            }
        }
    }
    return 0;
}