#include<stdio.h>
#include<string.h>
#define N 1010

unsigned long long T,q[N],n;


int main()
{
	scanf("%llu",&T);
	
	while(T--)
	{
		int tt=0;
		scanf("%llu",&n);
		while(n--)
		{
			char a[16];
			scanf("\n%s",&a);
			if(strcmp(a,"push")==0)
			{
				unsigned long long x;
				scanf("%llu",&x);
				q[++tt]=x;
			}else if(strcmp(a,"pop")==0)
			{
				if(tt<=0)
				printf("Empty\n");
				else tt--;
			}else if(strcmp(a,"query")==0)
			{
				if(tt<=0)
				printf("Anguei!\n");
				else printf("%llu",q[tt]);
			}else if(strcmp(a,"size")==0)
			{
				printf("%llu",tt);
			}
 		}
	}
	return 0;
}