/in/foo.cc: In member function 'void VectorArray::Sort()':
/in/foo.cc:71:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Vector3>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |         for(int i = 0; i < a.size();i++)
      |                        ~~^~~~~~~~~~
/in/foo.cc:75:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Vector3>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |             for (; j < a.size(); j++)
      |                    ~~^~~~~~~~~~