Compilare: main.cpp: In member function 'std::vector<int> graf::bfs(int)': main.cpp:23:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0; i<this->adiacenta.size(); i++){ | ~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:31:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(int i=0; i<res.size(); i++){ | ~^~~~~~~~~~~ main.cpp:19:13: warning: unused variable 'cnt' [-Wunused-variable] 19 | int cnt=1; | ^~~