Compilare: main.cpp: In member function 'void Graf::DFS(int, std::vector<bool>&)': main.cpp:132:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 132 | for(int i = 1; i < lista_vecini[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::hakimi(int, std::vector<int>&, std::ostream&)': main.cpp:184:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 184 | if(aux > lista.size()) | ~~~~^~~~~~~~~~~~~~ main.cpp: In member function 'int Graf::DFS_sortaret(std::queue<int>&)': main.cpp:204:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 204 | for(int j = 1; j < lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:214:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 214 | for(int i = 1; i < lista_vecini[aux].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:221:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::queue<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 221 | if(nr_noduri == lista.size()) | ~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::darb(int, int*, bool*, std::queue<int>, int&, int&)': main.cpp:352:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 352 | for(i = 1; i < lista_vecini[el].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'int Graf::ciclu_hamiltonian(std::istream&, std::vector<int>*, int (*)[21], int (*)[21], int)': main.cpp:391:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 391 | for (int k = 0; k < lista[j].size(); ++k) | ~~^~~~~~~~~~~~~~~~~ main.cpp:396:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 396 | for (int i = 0; i < lista_vecini[0].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void pb_biconex()': main.cpp:481:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 481 | for(int i = 0; i < componente_biconexe.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:485:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 485 | for(int j = 0; j < componente_biconexe[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:471:15: warning: unused variable 'nr_biconexe' [-Wunused-variable] 471 | int N, M, nr_biconexe = 0; | ^~~~~~~~~~~ main.cpp: In function 'void pb_apm()': main.cpp:588:25: warning: unused variable 'cost1' [-Wunused-variable] 588 | int N, M, cost = 0, cost1 = 0; | ^~~~~