Compilare: main.cpp: In function 'std::ostream& operator<<(std::ostream&, Graf)': main.cpp:69:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for(int i = 0; i < graf.noduri.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'int Graf::nrConexe()': main.cpp:80:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | for(int i = 0; i < noduri.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::costuriBFS(int, std::ostream&)': main.cpp:92:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 92 | for (int i = 0; i < noduri.size(); i++) { | ~~^~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::sortareTopologica(std::ostream&)': main.cpp:102:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 102 | for(int i = 0; i < noduri.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:101:13: warning: unused variable 'nr' [-Wunused-variable] 101 | int nr = 0; | ^~ main.cpp: In member function 'void Graf::componenteConexe(std::ostream&)': main.cpp:115:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 115 | for (int i = 0; i < noduri.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:130:25: warning: unused variable 'start' [-Wunused-variable] 130 | int noduri, muchii, start; | ^~~~~