Compilare: main.cpp: In function 'void bfs(int, std::vector<int>&)': main.cpp:35:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[x].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:66:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<lant.size();i++) { ~^~~~~~~~~~~~ main.cpp:79:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<rez.size();i++) ~^~~~~~~~~~~