Compilare: main.cpp: In constructor 'Graf::Graf(int, int, int, std::vector<std::vector<int> >)': main.cpp:31:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for (int j = 0; j < lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::BFS()': main.cpp:56:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for (int i = 0; i < lista_vecini[nod_curent].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::DFS(int, std::vector<int>&)': main.cpp:76:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | for (int i = 0; i < lista_vecini[nod_curent].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::ostream& operator<<(std::ostream&, const Graf&)': main.cpp:156:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 156 | for (int j = 0; j < g.lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:168:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 168 | for (int j = 0; j < g.lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~