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  1. #include <iostream>
  2. #include <map>
  3. #include <vector>
  4. #include <queue>
  5. using namespace std;
  6.  
  7. int main() {
  8.     ios::sync_with_stdio(false);
  9.     cin.tie(NULL);
  10.     cout.tie(NULL);
  11.     int t;
  12.     cin >> t;
  13.     queue < int > q;
  14.     priority_queue < int ,vector<int> , greater<> > pq;
  15.     while (t--) {
  16.         int opt;
  17.         cin >> opt;
  18.         if (opt == 1) {
  19.             int x;
  20.             cin >> x;
  21.             q.push(x);
  22.         }
  23.         else if (opt == 2) {
  24.             if (!pq.empty()) {
  25.                 cout << pq.top() << endl;
  26.                 pq.pop();
  27.  
  28.             }
  29.             else if (!q.empty()) {
  30.                 cout << q.front() << endl;
  31.                 q.pop();
  32.             }
  33.         }
  34.         else if (opt == 3) {
  35.             while (!q.empty()) {
  36.                 pq.push(q.front());
  37.                 q.pop();
  38.             }
  39.         }
  40.     }
  41.  
  42. }
  43.  
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/kaCADL
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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