/in/foo.cc: In function 'bool isSimilar(std::__cxx11::string, std::__cxx11::string)':
/in/foo.cc:23:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(i<A.size()&&j<B.size()) 
         ~^~~~~~~~~
/in/foo.cc:23:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(i<A.size()&&j<B.size()) 
                     ~^~~~~~~~~