#include<bits/stdc++.h>
using namespace std;
int T,n;
string s;
int main(){
	cin>>T;
	unsigned long long t;
	stack<unsigned long long> line;
	while(T--){
		scanf("%d",&n);
		for(int i=0;i<n;i++){
			cin>>s;
			//scanf("%s",&s);
			if(s=="push"){
				scanf("%lld\n",&t);
				line.push(t);
				continue;
			}
			if(s=="query"){
				if(line.empty()){
					printf("Anguei!\n");
					continue;
				}
				else{
					printf("%lld\n",line.top());
				}
				
			}
			if(s=="pop"){
				if(line.empty()){
					printf("Empty\n");
					continue;
				}
				else{
					line.pop();
				}
				
			}
			if(s=="size"){
				printf("%lld\n",line.size());
			}
		}
		
		
	} 
	return 0;
}