#include <fstream>
#include <set>

using namespace std;

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

int v[200003],n,op,m;

multiset<int>heap;

int main()
{
    fin>>n;
    for(int i=1;i<=n;i++)
    {
        fin>>op;
        if(op==1)
        {
            m++;
            fin>>v[m];
            heap.insert(v[m]);
        }
        else if(op==2)
        {
            int x;
            fin>>x;
            heap.erase(heap.find(v[x]));
        }
        else if(op==3)
        {
            multiset<int> :: iterator it=heap.begin();
            fout<<*it<<'\n';
        }
    }
}