Compilare: main.cpp: In member function 'void Graph::print_comp_biconexe_udg(std::ostream&)': main.cpp:198:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 198 | for(int i=1;i<componenta.size();++i) | ~^~~~~~~~~~~~~~~~~~