#include <bits/stdc++.h>

using namespace std;
ifstream in("C:\\Users\\sumur\\Desktop\\SD\\heapuri\\heapuri.in");
ofstream out("C:\\Users\\sumur\\Desktop\\SD\\heapuri\\heapuri.out");

int main(){
    int n,aux;
    vector<int > m;
    in >> n;
    for(int i = 0 ; i < n ; i ++)
    {
       in >> aux;
       if(aux == 1){
           in >> aux;
           m.push_back(aux);
       }else if (aux == 2){
           in >> aux;
            m.erase(m.begin() + aux);
       }else{
           int min = m[1];
           for(auto k:m)
               if (min > k )
                   min = k;
           out << min;
       }
    }
    return 0;
}