import java.util.*;
import java.io.*;
public class Main{
    public static void main(String args[]){
        long t,n,x;
        long top=0;
        long[] stack=new long[10000000];
        String w;
        Scanner in=new Scanner(System.in);
        t=in.nextInt();
        for(long i=1;i<=t;i++){
            n=in.nextInt();
            for(long j=1;j<=n;j++){
                w=in.next();
                if(w.equals("push")==true){
                    top++;
                    x=in.nextInt();
                    stack[(int)top]=x;
                }else if(w.equals("pop")==true){
                    if(top==0){
                        System.out.println("Empty");
                    }else{
                        top--;
                    }
                }else if(w.equals("query")==true){
                    if(top==0){
                        System.out.println("Anguei!");
                    }else{
                        System.out.println(stack[(int)top]);
                    }
                }else{
                    System.out.println(top);
                }
            }
            top=0;
        }
    }
}