Compilare: main.cpp: In function 'int main()': main.cpp:45:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for (int i = 0; i < x_panel_id.size(); ++i) { | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:29:6: warning: unused variable 'nr_x_panels' [-Wunused-variable] 29 | int nr_x_panels = x_panel_id.size(), cnt_x_panel_occurrences = 0, min_distance = MAX_DISTANCE; | ^~~~~~~~~~~