Compilare: main.cpp: In function 'std::ostream& operator<<(std::ostream&, Graf)': main.cpp:20:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(int i = 0; i < graf.noduri.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'int Graf::nrConexe()': main.cpp:32:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(int i = 0; i < noduri.size(); i++) | ~~^~~~~~~~~~~~~~~