#include<bits/stdc++.h>
using namespace std;
int main()
{
    unsigned long long a;
    cin>>a;
    for(int i=1;i<=a;i++)
    {
        int b;
        stack<int> s;
        cin>>b;
        for(int j=1;j<=b;j++)
        {
            string g;
            cin>>g;
            if(g=="push")
            {
                unsigned long long c;
                cin>>c;
                s.push(c);
            }
            else if(g=="pop")
            {
            	if(s.empty()) cout<<"Empty\n"; 
            	else s.pop();
			}
			else if(g=="query")
			{
				if(s.empty()) cout<<"Anguei!\n";
				else cout<<s.top()<<"\n";
			}
			else if(g=="size")
			{
				cout<<s.size()<<"\n";
			}
        }
    }
    return 0;
}