O: calc_w  

\: Ҩ

m:
   1 UԦ\      Yе  ->   ->
   2 uC            Y_е  ->    

1 Ʈw -- isשμW[W, (A̷R)  

2 C,}@ʿﶵ,ۭqw 

3 r,ۭqw 

 Ҩ,ضJ,

 tΨ̾ڿJƶزͼҨƦr
