Compilare: main.cpp: In member function 'void Graf::DFS(int, std::vector<bool>&)': main.cpp:126:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 126 | 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:178:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 178 | if(aux > lista.size()) | ~~~~^~~~~~~~~~~~~~ main.cpp: In member function 'int Graf::DFS_sortaret(std::queue<int>&)': main.cpp:198:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 198 | for(int j = 1; j < lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:208:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 208 | for(int i = 1; i < lista_vecini[aux].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:215:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::queue<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 215 | if(nr_noduri == lista.size()) | ~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::darb(int, int*, bool*, std::queue<int>, int&, int&)': main.cpp:346:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 346 | for(i = 0; 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:385:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 385 | for (int k = 0; k < lista[j].size(); ++k) | ~~^~~~~~~~~~~~~~~~~ main.cpp:390:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 390 | for (int i = 0; i < lista_vecini[0].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void pb_biconex()': main.cpp:475:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 475 | for(int i = 0; i < componente_biconexe.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:479:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 479 | for(int j = 0; j < componente_biconexe[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:465:15: warning: unused variable 'nr_biconexe' [-Wunused-variable] 465 | int N, M, nr_biconexe = 0; | ^~~~~~~~~~~ main.cpp: In function 'void pb_apm()': main.cpp:581:25: warning: unused variable 'cost1' [-Wunused-variable] 581 | int N, M, cost = 0, cost1 = 0; | ^~~~~