Compilare: main.cpp: In function 'void BFS(int)': main.cpp:17:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(int i=0; i<V[nod].size(); i++){ | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:38:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(int j=0; j<V[i].size(); j++) | ~^~~~~~~~~~~~