îTj

@îRj⑫D

@@()=P{

@@(11)=P{PPPQ

@@(11)=(10)+(9)-(6)-(4)PW{PR|PQ|VPQ

@@(12)=P{Q{R{S{U{PQQW

@@(12)=(11)+(10)-(7)-(5)+(0)PQ{PW|W|W{PQQW