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

ifstream f("heapuri.in");
ofstream g("heapuri.out");

int n,t,v,nrc;
int x[200001];

multiset<int> heap;


int main()
{
    f>>n;
    for(int i=1;i<=n;i++)
    {
        f>>t;
        switch(t)
        {
            case 1:
                {
                    f>>v;
                    nrc++;
                    x[nrc]=v;
                    heap.insert(v);
                    break;
                }
            case 2:
                {
                    f>>v;
                    multiset<int>::iterator it=heap.find(x[v]);
                    heap.erase(it);
                    break;
                }
            case 3:
                {
                    multiset<int>::iterator it=heap.begin();
                    g<<*it<<"\n";
                }
        }
    }
    return 0;
}