/in/foo.cc:27:1: error: expected ';' after class definition
 }
 ^
/in/foo.cc: In member function 'int TA::query(int)':
/in/foo.cc:16:30: error: 'x' was not declared in this scope
   for(int i=id; i; i-=lowbit(x)){
                              ^
/in/foo.cc:19:2: warning: no return statement in function returning non-void [-Wreturn-type]
  }
  ^