IX,Xϴ,XϽϴ,XϽ,X\
l(f) O(sh)
+
r12.9 Ԫ
ٶÓ֬ϴ
(ji)ܭh(hun)XXϽϴˇ
r28 Ԫ
(ji)ܭh(hun)Pϴgˇ
r30 Ԫ
h(hun)g\XĤˮϵͿҺ