/in/foo.cc: In constructor 'Array::Array(std::vector<int>&)':
/in/foo.cc:9:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |                 for(int i=0;i<a.size();i++)
      |                             ~^~~~~~~~~
/in/foo.cc: In member function 'void Array::Insert(int)':
/in/foo.cc:21:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |                         for(int i=0;i<nums.size();i++)
      |                                     ~^~~~~~~~~~~~