#include <iostream>

using namespace std;
int v[1005];
int n;
int main()
{
   int t;
   cin>>t;
   while(t--)
   {
       int a,b;
       cin>>a;
       if(a==1 || a==3)
        cin>>b;
       if(a==2)
         {if(n-1>=0)
         n--;}
       else
       {
           if(a==1)
            v[++n]=b;
           else
           {
               int ok=0;
                for(int i=1;i<=n;i++)
                    if(v[i]<=b)
                        cout<<v[i]<<" ",ok=1;
               if(!ok)
                cout<<"Empty";
                cout<<"\n";
           }
       }
   }
}