Compilare: main.cpp: In function 'int bfs(int)': main.cpp:91:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | for(int i=0; i<G[nod].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:174:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 174 | for(int j=0; j<G[i].size(); j++) | ~^~~~~~~~~~~~ main.cpp:187:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 187 | for(int j=0; j<G[n+k+1].size(); j++) | ~^~~~~~~~~~~~~~~~