foo.cc: In function 'int Search(std::vector<int>&, int)':
foo.cc:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |         for(int i=0;i<vt.size();i++)
      |                     ~^~~~~~~~~~
foo.cc: In function 'int Shortest(std::map<int, std::map<int, int> >&, int, int, std::vector<int>&)':
foo.cc:85:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |                         for(int i=0;i<vt.size();i++)
      |                                     ~^~~~~~~~~~

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