Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:20:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[s].size();i++) if(!viz[v[s].at(i)]) DFS(v[s].at(i)); ^ user.cpp: In function ‘long long int dinamic()’: user.cpp:33:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[s].size();j++) if(nrord[s]>nrord[v[s].at(j)]) ^