#include<bits/stdc++.h>
using namespace std;
unsigned long long n,a[214514191],l=0;
unsigned long long push(){
	unsigned long long x;
	cin>>x;
	l++;
	a[l]=x;
}
unsigned long long query(){
	if(l==0) cout<<"Anguei!\n";
	else cout<<a[l]<<endl;
}
unsigned long long pop(){
	if(l==0) cout<<"Empty\n";
	else{
		a[l]=0;
		l--;	
	}
}
unsigned long long siz(){
	cout<<l<<endl;
}
int main(){
	cin>>n;
	for(unsigned long long i=1;i<=n;i++){
		unsigned long long m;
		cin>>m;
		for(unsigned long long j=1;j<=m;j++){
			string a;
			cin>>a;
			if(a=="push")push();
			if(a=="pop")pop();
			if(a=="query")query();
			if(a=="size")siz();
		}
	}
}