/in/foo.cc: In function 'bool compare(int, std::string, std::string, std::string)':
/in/foo.cc:34:15: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   34 |  if (a == add && b == sub || a == sub && b == add)
      |      ~~~~~~~~~^~~~~~~~~~~
/in/foo.cc: In function 'bool circulate(bool, std::string, std::string, std::string)':
/in/foo.cc:41:14: warning: control reaches end of non-void function [-Wreturn-type]
   41 |  string temp=a1;
      |              ^~