Compilare: user.cpp: In function ‘int main()’: user.cpp:28:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<L[nod].size();j++) { ^ user.cpp:37:41: warning: second operand of conditional expression has no effect [-Wunused-value] fout<<d[y] > 0 ? d[y] : -d[y]; ^ user.cpp:37:50: warning: third operand of conditional expression has no effect [-Wunused-value] fout<<d[y] > 0 ? d[y] : -d[y]; ^