Compilare: main.cpp: In function 'bool bfs(int)': main.cpp:101:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 101 | for(int i=0; i<G[nod].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:134:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 134 | for(int z=0; z<G[j].size(); z++) | ~^~~~~~~~~~~~ main.cpp:182:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 182 | for(int j=0; j<G[D].size(); j++) | ~^~~~~~~~~~~~ main.cpp:207:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 207 | for(int i=0; i<ans.size(); i++) | ~^~~~~~~~~~~