#include <bits/stdc++.h>
using namespace std;
int t;
stack<int>aa;
string order;
int main() {
	scanf("%d",&t);
	while(t--){
		int a;
		scanf("%d",&a);
		while(a--){
			cin>>order;
			if(order == "push"){
				int x;
				scanf("%d",&x);
				aa.push(x);
			}
			else if(order == "pop"){
				if(aa.size() == 0){
					printf("Empty\n");
					continue;
				}
				aa.pop();
			}
			else if(order == "query"){
				if(aa.size() == 0){
					printf("Anguei!\n");
					continue;
				}
				printf("%d\n",aa.top());
			}
			else if(order == "size")printf("%d\n",aa.size());
		}
	}
	return 0;
}