#include<bits/stdc++.h>
using namespace std;
ifstream f("heapuri.in");
ofstream g("heapuri.out");
int n, p, x, nr, minim;
vector<int>v;
vector<int>u;
int main()
{
    f>>n;
    for(int i=1; i<=n; i++)
    {
        f>>p;
        if(p==1)
        {
            f>>x;
            v.push_back(x);
            u.push_back(x);
        }
        else if(p==2)
        {
            f>>x;
            v.erase(u.begin()+x);
        }
        else g<<*min_element(v.begin(), v.end())<<'\n';
    }
    return 0;
}