insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:10:13: error: 'move_inside' was not declared in this scope
10 | move_inside(i);
| ^~~~~~~~~~~
insects.cpp:15:36: error: 'press_button' was not declared in this scope
15 | if (cnt + 1 == press_button()) {
| ^~~~~~~~~~~~
insects.cpp:19:25: error: 'move_outside' was not declared in this scope
19 | move_outside(j);
| ^~~~~~~~~~~~
insects.cpp:24:21: error: 'move_outside' was not declared in this scope
24 | move_outside(j);
| ^~~~~~~~~~~~