/in/foo.cc: In function 'int Joseph(int, std::vector<int>&, int)':
/in/foo.cc:22:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   return (i == test.size()-1)? ((Joseph (m-1, test, 0) + test[i] ) % m) :((Joseph (m-1, test, i+1) + test[i] ) % m) ;
           ~~^~~~~~~~~~~~~~~~