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