/in/foo.cc: In function 'int main()':
/in/foo.cc:35:19: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   35 |     if (b.find(a) == -1)
      |         ~~~~~~~~~~^~~~~
/in/foo.cc:42:29: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   42 |         while (b.find(a, n) != -1)
      |                ~~~~~~~~~~~~~^~~~~