Compilare: main.cpp: In function 'bool bfs(int)': main.cpp:102:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 102 | for(int i=0; i<G[nod].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:146:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 146 | for(int z=0; z<G[j].size(); z++) | ~^~~~~~~~~~~~ main.cpp:179:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 179 | for(int j=0; j<G[D].size(); j--) | ~^~~~~~~~~~~~ main.cpp:209:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 209 | for(int i=0; i<ans.size(); i++) | ~^~~~~~~~~~~