题目B3614栈【模板】here

0分代码求改

拜托了

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