Compilare: main.cpp: In function 'std::ostream& operator<<(std::ostream&, Graf)': main.cpp:70:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | for(int i = 0; i < graf.noduri.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'int Graf::nrConexe()': main.cpp:81:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for(int i = 0; i < noduri.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::costuriBFS(int, std::ostream&)': main.cpp:93:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 93 | for (int i = 0; i < noduri.size(); i++) { | ~~^~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::sortareTopologica(std::ostream&)': main.cpp:103:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 103 | for(int i = 0; i < noduri.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:102:13: warning: unused variable 'nr' [-Wunused-variable] 102 | int nr = 0; | ^~ main.cpp: In member function 'void Graf::componenteBiconexe(std::ostream&)': main.cpp:116:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 116 | for (int i = 0; i < noduri.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:131:25: warning: unused variable 'start' [-Wunused-variable] 131 | int noduri, muchii, start; | ^~~~~