Compilare: user.cpp: In function ‘bool verif(int)’: user.cpp:34:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0 ; i < graf[noda].size() ; i++ ) ^ user.cpp: In function ‘void DFS(int)’: user.cpp:48:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < graf[nod].size() ; i++ ) ^ user.cpp: In function ‘int main()’: user.cpp:66:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < v.size() ; i++ ) ^