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      1. и ~Rע

        lrg:2017-05-12 ݋:f

        ڜʂиԇ^ŴҶyܵ yȵ ПoՓ~R;͵yȶǕyԇݲǼL˶Ҳ˸ČI~RՈSYJBYSСȥ!

        ڜʂи(n)ԇ^ŴҶyܵ yȵ ПoՓ~R;͵yȶǕyԇݲǼL˶ӣͬrҲ˸ČI~R׺еͬW~RĜʂеһЩ^ҪԼи ķٶȣ~RAĭhǣԓ_ȥʂи ~RĜʂ?҂͞ԔĽBһ°

        и ~Rʂ^ڬF yȵܶͬW^PעһЩĸ࣬xֿڵL~ԭܺͨҶJȻ yôҸy~RȥWȥ@ӿnj䌍@ӵ뷨ȫ_иĿԇc~R~R\Ҳ҂fģҊ~RIJҊ÷ĿԣֻǺεȥbһЩL~и fǺܴ

        и ľܶ˶F@ӵһrmȻ܉ еăݣҪ“һ”@Ҳ漰 ٶȵĆ}ҪԼ ٶ҂Ҫc~Rxϣ@ӲڿԇмrѸ𡣺ܶWڿԭܻ֮Ȼ еăԭ߀nj Zģɵġ

        䌍иԇ߀Ǖ҂ǷTδW(n) ԇĭhҲǕ漰һЩٵZZĿcȻ@ЩٵZZ\и ͿZ俼ͨġڂ俼^hһҪھYZӛ䛲÷x͜߷ٶ

        и ~RעP]