#include <iostream>
#include <fstream>

using namespace std;

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

unsigned int heap[200001];
unsigned int valoriAdd[200001];
int L = 0;
int N;

inline int Minim()
{
    return heap[1];
}

inline bool Smalller(int x, int y)
{
    return heap[x] < heap[y];
}

inline bool Bigger(int x, int y)
{
    return heap[x] > heap[y];
}

void Swap(int x, int y)
{
    int aux;
    aux = heap[x];
    heap[x] = heap[y];
    heap[y] = aux;
}

void UpHeap(int L)
{
    int father = L / 2;
    if(Smalller(L,father))
    {
        Swap(L,father);
        UpHeap(father);
    }
}

void DownHeap(int x)
{
    if (x < L)
    {
        int leftSon = 0, rightSon = 0; 
        if(x * 2 <= L)
        {
            leftSon = x * 2;
        }
        if(x * 2 + 1 <= L)
        {
            rightSon = x * 2 + 1;
        }
        if(rightSon != 0 || leftSon != 0) {
            if (Bigger(x,leftSon))
            {
                Swap(x,leftSon);
                DownHeap(leftSon);
            }
            else if(Bigger(x,rightSon))
            {
                Swap(x,rightSon);
                DownHeap(rightSon);
            }
        }
    }
}

void Inserare(int x, int &L)
{
    valoriAdd[L+1] = x;
    heap[L+1] = x;
    L++;
    if(L > 1){
        UpHeap(L);
    }
}

void Stergere(int x)
{
    int xEl;
    xEl = valoriAdd[x];
    for (int i = 1; i <= L; i++)
    {
        if(heap[i] == xEl)
        {
            xEl = i;
            i = L + 1;
        }
    }
    heap[xEl] = heap[L];
    heap[L] = 0;
    L--;
    DownHeap(xEl);
    UpHeap(xEl);
}

void Operatii()
{
    int op;
    int el;
    in >> op;
    if(op == 1)
    {
        in >> el;
        Inserare(el,L);
    }
    else if(op == 2)
    {
        in >> el;
        Stergere(el);
    }
    else if(op == 3)
    {
        out << Minim() << endl;
    }
}

int main()
{
    in >> N;
    for (int i = 0; i < N; i++)
    {
        Operatii();
    }
    return 0;
}