30分（样例过了）有调必关

#include<bits/stdc++.h>
using namespace std;
#define int long long
int T,q,zhan[1000010],head;
signed main()
{
	cin>>T;
	while(T--)
	{
		head=0;
		cin>>q;
		for(int i=1;i<=q;i++)
		{
			string s;
			int x;
			cin>>s;
			if(s=="push")
				cin>>x,zhan[++head]=x;
			else if(s=="pop")
				if(head==0)
					cout<<"Empty"<<endl;
				else
					head--;
			else if(s=="query")
				if(head==0)
					cout<<"Anguei!"<<endl;
				else
					cout<<zhan[head]<<endl;
			else
				cout<<head<<endl;
		}
	}
	return 0;
}