Main.cc:2:1: error: 'string' does not name a type
    2 | string canCleanAllRooms(int k, int a, int b) {
      | ^~~~~~
Main.cc: In function 'int main()':
Main.cc:16:5: error: 'cin' was not declared in this scope
   16 |     cin >> k >> a >> b;
      |     ^~~
Main.cc:18:5: error: 'cout' was not declared in this scope
   18 |     cout << canCleanAllRooms(k, a, b) << endl;
      |     ^~~~
Main.cc:18:13: error: 'canCleanAllRooms' was not declared in this scope
   18 |     cout << canCleanAllRooms(k, a, b) << endl;
      |             ^~~~~~~~~~~~~~~~
Main.cc:18:42: error: 'endl' was not declared in this scope
   18 |     cout << canCleanAllRooms(k, a, b) << endl;
      |                                          ^~~~