Compilare: user.cpp: In function ‘void Dfs(int)’: user.cpp:61:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<Muchie[nod].size();i++) { ^ user.cpp: In function ‘void solve()’: user.cpp:77:13: warning: ‘rad’ may be used uninitialized in this function [-Wmaybe-uninitialized] Dfs(rad); ^