Compilare: user.cpp: In function ‘void DFS(int, std::vector<int>*, int)’: user.cpp:24:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( i = 0 ; i < G[ nod ].size() ; i++ ) ^ user.cpp: In function ‘void Drum(int, int)’: user.cpp:43:9: warning: unused variable ‘k’ [-Wunused-variable] int k,i,j; ^ user.cpp:43:13: warning: unused variable ‘j’ [-Wunused-variable] int k,i,j; ^