Compilare: user.cpp: In function ‘int main()’: user.cpp:33:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<graf[nod].size();i++) ^ user.cpp:35:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<graf[graf[nod][i]].size();j++) ^ user.cpp:47:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sol[1].size();i++) ^