Compilare: user.cpp: In function ‘void DF(long int, long int, long int, long int*, long int*, std::vector<std::pair<int, int> >*)’: user.cpp:15:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[k].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:37:10: warning: unused variable ‘j’ [-Wunused-variable] long int j, i, n, m, b, c, x, y, d, vizitat[30001],parinte[30001]; ^