Compilare: main.cpp: In constructor 'Graf::Graf(int, int, int, std::vector<std::vector<int> >)': main.cpp:32:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for (int j = 0; j < lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::BFS()': main.cpp:57:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | 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:77:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for (int i = 0; i < lista_vecini[nod_curent].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::dfs_muchiiIntoarcere(int, std::vector<int>&, std::vector<int>&, std::vector<int>&, std::vector<std::vector<int> >&)': main.cpp:145:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 145 | for (int j = 0; j < lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::criticalConnections()': main.cpp:172:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 172 | for (int i = 0; i < solutie.size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::tare_conex(int, std::vector<int>&, std::vector<int>&, std::vector<int>&, int&, std::stack<int>&, int&, std::vector<std::vector<int> >&)': main.cpp:182:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 182 | for (int j = 0; j < lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::tarjan()': main.cpp:227:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 227 | for (int j = 0; j < solutie[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::dfs_sortare(int, std::vector<int>&, std::vector<int>&)': main.cpp:234:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 234 | for (int i = 0; i < lista_vecini[nod_curent].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::dfs_biconex(int, int&, std::vector<int>&, std::vector<int>&, std::vector<int>&, std::stack<std::pair<int, int> >&, int&, std::vector<std::vector<std::pair<int, int> > >&)': main.cpp:259:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 259 | for (int j = 0; j < lista_vecini[i].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::biconex()': main.cpp:314:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 314 | for (int i = 0; i < solutie.size(); i++) { | ~~^~~~~~~~~~~~~~~~ main.cpp:318:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 318 | for (int j = 0; j < solutie[i].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::ostream& operator<<(std::ostream&, const Graf&)': main.cpp:381:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 381 | for (int j = 0; j < g.lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:393:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 393 | for (int j = 0; j < g.lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~