/in/foo.cc: In function 'int main()':
/in/foo.cc:20:20: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'behin'; did you mean 'begin'?
   20 |         reverse(s2.behin(),s2.end());
      |                    ^~~~~
      |                    begin
/in/foo.cc:21:30: error: expected ';' before '}' token
   21 |         if(s==s2&&pd(x))sum++
      |                              ^
      |                              ;
   22 | 
   23 |         }
      |         ~