Compilare: main.cpp: In function 'std::ostream& operator<<(std::ostream&, Graf)': main.cpp:84:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | for(int i = 0; i < graf.noduri.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'int Graf::nrConexe()': main.cpp:95:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 95 | for(int i = 0; i < noduri.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::costuriBFS(int, std::ostream&)': main.cpp:107:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 107 | for (int i = 0; i < noduri.size(); i++) { | ~~^~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::sortareTopologica(std::ostream&)': main.cpp:117:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 117 | for(int i = 0; i < noduri.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:116:13: warning: unused variable 'nr' [-Wunused-variable] 116 | int nr = 0; | ^~ main.cpp: In member function 'void Graf::componenteBiconexe(std::ostream&)': main.cpp:130:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 130 | for (int i = 0; i < noduri.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::componenteTareConexe(std::ostream&)': main.cpp:144:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 144 | for(int i = 0; i < noduri.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:167:25: warning: unused variable 'start' [-Wunused-variable] 167 | int noduri, muchii, start; | ^~~~~