foo.cc: In function 'void Output(const std::vector<int>&)':
foo.cc:5:16: 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 'int Search(const std::vector<int>&, int)':
foo.cc:11:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |  for(int i=0; i<v.size(); i++)
      |               ~^~~~~~~~~
foo.cc: In function 'std::string Comp(std::vector<int>&, int)':
foo.cc:23:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  for(int i=si; i<sh.size(); i++)
      |                ~^~~~~~~~~~

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