implementer.cpp:8:8: warning: inline variables are only available with ‘-std=c++17’ or ‘-std=gnu++17’
    8 | static inline constexpr int kMaxQueries = 40000;
      |        ^~~~~~
answer.code: In function ‘int min_cardinality(int)’:
answer.code:18:25: error: ‘move_inside’ was not declared in this scope
   18 |                         move_inside(i);
      |                         ^~~~~~~~~~~
answer.code:20:41: error: ‘press_button’ was not declared in this scope
   20 |                                 int x = press_button();
      |                                         ^~~~~~~~~~~~
answer.code:26:41: error: ‘move_outside’ was not declared in this scope
   26 |                                         move_outside(i);
      |                                         ^~~~~~~~~~~~