2981. 零食

#include "bits/stdc++.h"
using namespace std;
using u32 = uint32_t;

int main() {
    u32 t;
    cin >> t;
    for (u32 i = 0; i != t; ++i) {
        cout << "case #" << i << ":\n";
        u32 n;
        cin >> n;
        priority_queue<u32, vector<u32>, greater<>> snacks;
        for (u32 i = 0; i != n; ++i) {
            char order;
            cin >> order;
            if (order == 'B') {
                u32 p;
                cin >> p;
                snacks.push(p);
            } else {
                cout << snacks.top() << '\n';
                snacks.pop();
            }
        }
    }
}