#include <iostream>
#include <fstream>

using namespace std;

int nh,nr,v[100],h[100],pos[100],k; //p[i] ==> i= ordinea citirii; p[i]=poz actuala in vect h

void schimb(int p, int q)
{
    int aux=h[p];
    h[p]=h[q];
    h[q]=aux;
    pos[h[p]]=p;
    pos[h[q]]=q;
}

void urca(int p)
{
    while(p>1 && v[h[p]]<v[h[p/2]])
    {
        schimb(p,p/2);
        p/=2;
    }
}

void coboara(int p)
{
    int fs=2*p,fd=2*p+1, bun=p;
    if(fs<=nh && v[h[fs]]<v[h[bun]])
        bun=fs;
    if(fd<=nh && v[h[fd]]<v[h[bun]])
        bun=fd;
    if(bun!=p)
    {
        schimb(bun,p);
        coboara(bun);
    }
}



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

    int i,p,m,x,cod;
    fin>>m;

    for(i=1;i<=m;i++)
    {
        fin>>cod;
        if(cod==1)
        {
            fin>>v[++nr];
            h[++nh]=nr;
            pos[nr]=nh;
            urca(nh);
        }
        if(cod==2)
        {
            fin>>x;
            p=pos[x];
            schimb(p,nh--);
            urca(p);
            coboara(p);
        }
        if(cod==3)
            fout<<v[h[1]]<<endl;
    }


    return 0;
}