/in/foo.cc: In member function 'void BigNumber::Div(const BigNumber&)':
/in/foo.cc:153:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 1; i < rlist.size(); i++) {
                     ~~^~~~~~~~~~~~~~
/in/foo.cc: In function 'std::ostream& operator<<(std::ostream&, const BigNumber&)':
/in/foo.cc:208:20: warning: array subscript has type 'char' [-Wchar-subscripts]
   out << b16[n.N[i]];
                    ^