foo.cc: In member function 'void gjd::Add(std::vector<int>&)':
foo.cc:41:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         while(i<v.size()&&i<v2.size())
      |               ~^~~~~~~~~
foo.cc:41:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         while(i<v.size()&&i<v2.size())
      |                           ~^~~~~~~~~~
foo.cc:48:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         while(i<v.size())
      |               ~^~~~~~~~~
foo.cc:55:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         while(i<v2.size())
      |               ~^~~~~~~~~~
foo.cc: In member function 'void gjd::Sub(std::vector<int>)':
foo.cc:71:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |         while(i<v.size()&&i<v1.size())
      |               ~^~~~~~~~~
foo.cc:71:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |         while(i<v.size()&&i<v1.size())
      |                           ~^~~~~~~~~~
foo.cc: In member function 'void gjd::Mul(int)':
foo.cc:91:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |         while(i<v.size())
      |               ~^~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:146:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  146 |  for(int i=0;i<a.v.size();i++)
      |              ~^~~~~~~~~~~
foo.cc:148:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  148 |   for(int j=0;j<b.v.size();j++)
      |               ~^~~~~~~~~~~

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