#include <bits/stdc++.h>
using namespace std;
unsigned long long a[1000001],top=0,t,n,x;
string s;
int main(){
	cin>>t;
	while(t--){
		cin>>n;
		while(n--){
			cin>>s;
			top=0;
			if(s=="push"){
				cin>>x;
				a[top++]=x;
			}else if(s=="pop"){
				if(top>0)
					top--;
				else
					cout<<"Empty\n";
			}else if(s=="query"){
				if(top>0)
					cout<<a[top-1]<<'\n';
				else
					cout<<"Anguei!\n";
			}else
				cout<<top<<'\n';
		}
	}
	return 0;
}

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