#include <fstream>
#include <set>
#include <iterator>
#define dim 200001

using  namespace std;

multiset <int> my_set;
int n, a, b, j, v[dim];

int main(){

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

    fin >> n;
    for(int i = 1; i <= n; i++){
        fin >> a;
        switch(a){
            case 1:{
                fin >> b;
                v[++j] = b;
                my_set.insert(b);
                break;
            }
            case 2:{
                fin >> b;
                my_set.erase(v[b]);
                break;
            }
            case 3:{
                multiset <int> :: iterator it = my_set.begin();
                fout << *it <<"\n";
                break;
            }
        }
    }
}