Compilare: main.cpp: In member function 'int graf_orientat::Ciclu_hamiltonian()': main.cpp:109:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 109 | for(int k=0; k<muchii_costuri_adiacenta[j].size(); ++k) //iau vecinii care intra in nodul j | ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:126:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 126 | for(int i=0; i<muchii_costuri_adiacenta[0].size(); ++i) | ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~