Compilare: user.cpp: In function ‘void det_comp()’: user.cpp:41:57: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(sters[G[x][k]]) {++k; if(k==G[x].size()) break;} ^ user.cpp:42:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k!=G[x].size()){ ^ user.cpp:44:53: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int nod=G[x][k], i=0; i<G[nod].size(); ++i) ^