#include<bits/stdc++.h>
using namespace std;
unsigned long long a[1000005],top=0;
void push(int b)
{
	top++;
	a[top]=b;
}
void pop()
{
	if(top==0)
	cout<<"Empty"<<endl;
	else{
	a[top]=0;
	top--;}
}
void query()
{
	if(top<=0)
	cout<<"Anguei!"<<endl;
	else cout<<a[top]<<endl;
}
void size()
{
	cout<<top<<endl;
}
int main()
{
	long long t,n,m;
	string s;
	cin>>t;
	for(int i=1;i<=t;i++)
	{
		cin>>n;
		for(int j=1;j<=n;j++)
		{
			cin>>s;
			if(s=="push")
			{cin>>m;push(m);}
			else
			if(s=="query")query();
			else
			if(s=="pop")pop();
			else
			if(s=="size")size();
		}
		memset(a,0,sizeof(a));
	}
	return 0;
}