foo.cc: In function 'int ee::new_find(std::vector<int>&, int)':
foo.cc:9:22: 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<a.size();i++)
      |                     ~^~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:28:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for(int i=0;i<a.size();i++)
      |                 ~^~~~~~~~~

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