#include<iostream>
#include<stdio.h>
#include<math.h>
#include<iomanip>
#include<string>
#include<algorithm>
#include <cstdlib>
#include<stdlib.h>
#include<sstream>
using namespace std;
unsigned long long a[1000007];
int main()
{   
    long t;
    cin >> t;
    long n;
    string s;
    int top=-1;
    int count=0;
    for (int i = 0; i < t; i++)
    {
        cin >> n;
        for (int j = 0; j < n; j++)
        {
            cin >> s;
            if (s == "push")
            {
                top++;
                cin >> a[top];
                count++;
            }
            else if (s == "pop")
            {
                if (count > 0)
                {
                    a[top] = 0;
                    top--;
                    count--;
                }
                else 
                {
                    cout << "Empty" << "\n";
                }
            }
            else if (s == "query")
            {
                if (count > 0)
                {
                    cout << a[top]<<"\n";
                }
                else
                {
                    cout << "Anguei!" << "\n";
                }
            }
            else if (s == "size")
            {
                cout << count<<"\n";
            }
        }

    }
    return 0;
}