Compilare: main.cpp: In function 'int main()': main.cpp:149:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 149 | for (int i = 0; i < comps.size(); i++) { | ~~^~~~~~~~~~~~~~ main.cpp:168:9: warning: variable 'begin_comp' set but not used [-Wunused-but-set-variable] 168 | int begin_comp; | ^~~~~~~~~~ main.cpp:163:30: warning: 'q_comp' may be used uninitialized in this function [-Wmaybe-uninitialized] 163 | if (q_comp != start_comp && q_comp != end_comp) { | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~