foo.cc: In function 'void Output(const std::vector<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 'int Search(const std::vector<int>&, int)':
foo.cc:11:15: 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:22:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |  for(int i=si;i<sh.size();i++)
      |               ~^~~~~~~~~~

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