Compilare: main.cpp: In function 'void df(int)': main.cpp:71:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<G[nod].size();j++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:118:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(q=0; q<conex.size(); q++) ~^~~~~~~~~~~~~ main.cpp:149:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(q=0;q<G[el].size();q++) ~^~~~~~~~~~~~~