#include <fstream>
#include <queue>
#include <set>
using namespace std;
ifstream cin("heapuri.in");
ofstream cout("heapuri.out");
int n,v[200005],ce,nr;
multiset<int>s;
multiset<int>::iterator it;

int main()
{
    cin>>n;
    for(int i=1; i<=n; i++)
    {
        cin>>ce;
        if(ce==1)
        {
            nr++;
            cin>>v[nr];
            s.insert(v[nr]);
        }
        else if(ce==2)
        {
            int x;
            cin>>x;
            s.erase(s.find(v[x]));
        }
        else
        {
            it=s.begin();
            cout<<*it<<'\n';
        }
    }
    return 0;
}