/in/foo.cc: In function 'int main()':
/in/foo.cc:12:8: warning: unused variable 'h' [-Wunused-variable]
  int n,h,r;
        ^
/in/foo.cc:14:15: warning: variable 'x2' set but not used [-Wunused-but-set-variable]
  int x1,y1,z1,x2,y2,z2,x3,y3,z3;//3为小,2为大 
               ^~
/in/foo.cc:14:18: warning: variable 'y2' set but not used [-Wunused-but-set-variable]
  int x1,y1,z1,x2,y2,z2,x3,y3,z3;//3为小,2为大 
                  ^~
/in/foo.cc:14:24: warning: variable 'x3' set but not used [-Wunused-but-set-variable]
  int x1,y1,z1,x2,y2,z2,x3,y3,z3;//3为小,2为大 
                        ^~
/in/foo.cc:14:27: warning: variable 'y3' set but not used [-Wunused-but-set-variable]
  int x1,y1,z1,x2,y2,z2,x3,y3,z3;//3为小,2为大 
                           ^~