#include <bits/stdc++.h>

using namespace std;
ifstream fin("heapuri.in");
ofstream fout("heapuri.out");
vector<int> v;
multiset<int> mts;
int main()
{
    int n,i,tip,x;
    fin>>n;
    for(i=1;i<=n;++i)
    {
        fin>>tip;
        if(tip==1)
        {
            fin>>x;
            v.push_back(x);
            mts.insert(x);
        }
        else if(tip==2)
        {
            fin>>x;
            auto it=mts.find(v[x-1]);
            mts.erase(it);
        }
        else if(tip==3)
        {
            fout<<*mts.begin()<<'\n';
        }
    }
    return 0;
}