#include <iostream>
#include <fstream>
#include <set>
using namespace std;

int main() {
    multiset<int> heap;
    ifstream fin("heapuri.in");
    ofstream fout("heapuri.out");
    int n, option, k = 0, x, v[200001];
    fin>>n;
    for (int i = 0; i < n; ++i) {
        fin>>option;
        if(option == 1){
            fin>>x;
            heap.insert(x);
            v[k++] = x;
        }
        else if (option == 2){
            fin>>x;
            heap.erase(heap.find(v[x - 1]));
        }
        else
            fout<<*heap.begin()<<endl;
    }
    return 0;
}