Compilare: main.cpp: In member function 'std::vector<int> graph::getOrder()': main.cpp:44:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 44 | if(sol.size() != n) sol.clear(); | ~~~~~~~~~~~^~~~ main.cpp: In member function 'void graph::getSafeNodes(int, std::vector<int>&)': main.cpp:83:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | if(nr == edges[nod].size()) safeNodes[nod] = 1; | ~~~^~~~~~~~~~~~~~~~~~~~