求调

#include<bits/stdc++.h>

using namespace std;
#define int long long
const int N = 1e6 + 5;

int t, n, x;
string s;
stack<int>p;
signed main() {
    cin >> t;
    while(t--) {
        cin >> n;

        while(n--) {
            cin >> s;
            if(s == "push") {
                cin >> x;
                p.push(x);
            }
            if(s == "pop") {
                if(p.empty())
                    cout << "Empty" << endl;
                else
                    p.pop();
            }
            if(s=="query") {
                if(p.empty())
                    cout << "Anguei!" << endl;
                else
                    cout << p.top()<< endl;
            }
            if(s =="size")
                cout << p.size() << endl;
        }
        while(!p.empty())
            p.pop();
    }
    return 0;
}