/in/foo.cc: In member function 'void BigInteger::Output()':
/in/foo.cc:78:31: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long unsigned int' [-Wformat=]
     printf("%08d",this->Num[i]);
                               ^
/in/foo.cc: In member function 'BigInteger BigInteger::RM()':
/in/foo.cc:110:3: warning: control reaches end of non-void function [-Wreturn-type]
   }
   ^