foo.cc: In function 'void Output(std::vector<int>&)':
foo.cc:9:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |  for(int i=0; i<v.size(); i++)
      |               ~^~~~~~~~~
foo.cc: In function 'int FindMin(std::vector<int>&)':
foo.cc:17:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |  for(int i=0; i<s.size(); i++)
      |               ~^~~~~~~~~
foo.cc: In function 'int ANS(std::vector<int>&)':
foo.cc:28:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |  for(int k=0; k<v.size(); k++)
      |               ~^~~~~~~~~
foo.cc:30:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |   for(int i=k+1; i<v.size(); i++)
      |                  ~^~~~~~~~~

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