#include <iostream>
#include <vector>

using namespace std;

vector<int>v;
int n,x,k;

int main()
{
    cin>>n;
    while(n--)
    {
        cin>>x;
        if( x == 1 )
        {
            cin>>x;
            v.push_back( x );
        }
        else if( x == 2 )
        {
            if(v.size())
            v.pop_back();
        }
        else
        {
            cin>>x;
            k = 0;
            for( auto it : v )
                if( it <= x )
                {
                    cout<<it<<' ';
                    k = 1;
                }
            if( !k )
                cout<<"Empty";
            cout<<'\n';
        }
    }
}