只AC了#1

#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;
}