Compilare: main.cpp: In member function 'bool UndirectedGraph::havelHakimi(std::vector<int>)': main.cpp:311:23: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 311 | if(degrees[0] > degrees.size() - loops) main.cpp: In member function 'std::vector<int> DirectedGraph::topologicalSorting()': main.cpp:419:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 419 | for(int node = 1; node < visited.size(); ++node) | ~~~~~^~~~~~~~~~~~~~~~