/in/foo.cc: In function 'int tubao(double*, double*, int)':
/in/foo.cc:111:24: warning: variable 'be' set but not used [-Wunused-but-set-variable]
  list<Angle>::iterator be=angle.begin(),en=angle.end(); 
                        ^~
/in/foo.cc:111:41: warning: variable 'en' set but not used [-Wunused-but-set-variable]
  list<Angle>::iterator be=angle.begin(),en=angle.end(); 
                                         ^~