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¡Ŀǰ^еһNg¡Ƿʽڶ̕ĕrg(ni)Ʊӵ^עܕ¡ʧ˱@Nrl(f)҂Ҫעc
1.xҎ(gu)t(y)C(gu)t(y)
Mв¡g֮ǰԓxҎ(gu)t(y)C(gu)t(y)@ӿԴ_gİȫԺЧԡͬrt(y)гĽ(jng)Ӗڻ߱͡gI(y)ȷCϿ]֮ƶҿɲķ
2.A˽g^
Mв¡֮ǰǰ˽g^̣Ҫעggrggע헵@ӿgиõt(y)CgM
3.^ע
¡ǿԸƱӵΠע^һϵеĸƤw׃F(xin)İȾעrt(y)ԓע(j)ߵg͵Mд_
4.gע
¡gҪעgo@dzҪԓDz坍Ҫ^ȻyMЏ呟ȡgF(xin)}rr(lin)ϵt(y)
֮Ҫⲣ¡gʧ҂ҪxҎ(gu)t(y)C(gu)t(y)˽g^^עgoֻ@ܱC¡gijɹ