Compilare: main.cpp: In member function 'void Graf::DFS(int, std::vector<bool>&)': main.cpp:129:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 129 | 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:181:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 181 | if(aux > lista.size()) | ~~~~^~~~~~~~~~~~~~ main.cpp: In member function 'int Graf::DFS_sortaret(std::queue<int>&)': main.cpp:201:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 201 | for(int j = 1; j < lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:211:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 211 | for(int i = 1; i < lista_vecini[aux].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:218:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::queue<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 218 | if(nr_noduri == lista.size()) | ~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::darb(int, int*, bool*, std::queue<int>, int&, int&)': main.cpp:349:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 349 | for(i = 0; i < lista_vecini[el].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'int Graf::ciclu_hamiltonian(int (*)[21])': main.cpp:383:28: warning: '<<' in boolean context, did you mean '<'? [-Wint-in-bool-context] 383 | if(i && (1 << j)) | ~~~^~~~~ main.cpp:384:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 384 | for(int k = 0; k < lista_vecini[j].size(); ++k) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:385:37: warning: '<<' in boolean context, did you mean '<'? [-Wint-in-bool-context] 385 | if (i && (1 << matrice[j][k])) | ~~~^~~~~~~~~~~~~~~~~ main.cpp:388:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 388 | for(int i = 0; i < lista_vecini[0].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void pb_biconex()': main.cpp:474:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 474 | for(int i = 0; i < componente_biconexe.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:478:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 478 | for(int j = 0; j < componente_biconexe[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:464:15: warning: unused variable 'nr_biconexe' [-Wunused-variable] 464 | int N, M, nr_biconexe = 0; | ^~~~~~~~~~~ main.cpp: In function 'void pb_apm()': main.cpp:580:25: warning: unused variable 'cost1' [-Wunused-variable] 580 | int N, M, cost = 0, cost1 = 0; | ^~~~~