/in/foo.cc: In member function 'int SeqList::FindMinCount()':
/in/foo.cc:23:23: error: 'length' was not declared in this scope
   for (int i = 0; i < length; i++)
                       ^~~~~~
/in/foo.cc:28:23: error: 'length' was not declared in this scope
   for (int i = 0; i < length; i++)
                       ^~~~~~