foo.cc: In member function 'void gjd::Add(std::vector<int>&)':
foo.cc:42:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |         while(i<v.size()&&i<v2.size())
      |               ~^~~~~~~~~
foo.cc:42:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |         while(i<v.size()&&i<v2.size())
      |                           ~^~~~~~~~~~
foo.cc:49:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |         while(i<v.size())
      |               ~^~~~~~~~~
foo.cc:56:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |         while(i<v2.size())
      |               ~^~~~~~~~~~
foo.cc: In member function 'void gjd::Mul(int)':
foo.cc:72:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |         while(i<v.size())
      |               ~^~~~~~~~~
foo.cc: In function 'void mul(gjd&, gjd&, gjd&)':
foo.cc:96:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |     for(int i=0;i<aa.v.size();i++)
      |                 ~^~~~~~~~~~~~

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