#include<bits/stdc++.h>
using namespace std;
typedef unsigned long long ll;
stack<ll> stk;
int main(){
	ll T,n;
	cin>>T;
	while(T--){
		cin>>n;
		for(ll i=1;i<=n;i++){
			string ops;
			cin>>ops;
			if(ops=="push"){
				int opd;
				cin>>opd;
				stk.push(opd);
			}else{
				if(ops=="pop"){
					if(stk.size()>0){
						stk.pop();
					}else{
						cout<<"Empty"<<endl;
					}
				}else if(ops=="query"){
					if(stk.size()>0){
						cout<<stk.top()<<endl;
					}else{
						cout<<"Anguei!"<<endl;
					}
				}else if(ops=="size"){
					cout<<stk.size()<<endl;
				}
			}
		}
		stack<ll>().swap(stk);
	}
	return 0;
}