foo.cc: In function 'int Search(std::vector<int>&, int)':
foo.cc:5:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 |  for(int i=0;i<v.size();i++)
      |              ~^~~~~~~~~
foo.cc: In function 'std::string Div(int, int)':
foo.cc:31:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |  for(int i=k;i<sh.size();i++)
      |              ~^~~~~~~~~~

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