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

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

multiset<int>heap;
int n, opt, x, k = 0, v[200001];

int main() {
    fin>>n;
    for (int i = 0; i < n; ++i) {
        fin>>opt;
        if (opt == 1){
            fin>>x;
            heap.insert(x);
            v[++k] = x;
        }
        else if (opt == 2){
            fin>>x;
            heap.erase(v[x]);
        }
        else
            fout<<*heap.begin()<<endl;
    }
    return 0;
}