为什么只能对一个样例

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	int m;
	cin>>m;
	for(int i=1;i<=m;i++){
		stack<unsigned long long> s;
		cin>>n;
		for(int j=1;j<=n;j++){
			string a;
			cin>>a;
			if(a=="push"){
				int y;
				cin>>y;
				s.push(y);
				continue; 
			}
			if(a=="query"){
				if(s.empty()==1){
					cout<<"Anguei!"<<endl;
					continue;
				}
				cout<<s.top()<<endl;
				continue;
			}
			if(a=="pop"){
				if(s.empty()==1){
					cout<<"Empty"<<endl;
					continue;
				}
				s.pop();
				continue;
			}
			if(a=="size"){
				cout<<s.size()<<endl; 
			}
		}
	}
	return 0;
}