Compilare: main.cpp: In function 'void dfs(int)': main.cpp:32:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<L[nod].size();++i){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:100:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<G[i].size()-1;++j) ~^~~~~~~~~~~~~~ main.cpp:101:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(w=j+1;w<G[i].size();++w){ ~^~~~~~~~~~~~