#include <bits/stdc++.h>

using namespace std;
ifstream fin("heapuri.in");
ofstream fout("heapuri.out");
int n,task,v[200005],k;
multiset<int>s;
int main()
{
    fin>>n;
    while(n--)
    {
        fin>>task;
        if(task==1)
        {
            int x;
            fin>>x;
            v[++k]=x;
            s.insert(x);
        }
        else if(task==2)
        {
            int x;
            fin>>x;
            s.erase(v[x]);
        }
        else
            fout<<*s.begin()<<'\n';
    }
    return 0;
}