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˵ʵСԼܽ˼䣬˵ϵΪ͵˵˵˵ϵǸ˫µһܱȡ޽еĳУѹ֡ա֣Сھ˰죬˵ԼʱҲǸ޵геģզһ绪᣿˸ս˵İ




ԴϵһֱѻС˵Ů˲ĵĻϺܿ죬ǧ˸˵ǰǡ
ɶ׶һ˹ӡ
żСίί˵
㽶֣ⶫϰֳôԶ֣ɹˮ׼ĳͿǰˣֻɫkeep awayһͱˣСȻˣ軨㲵ӵôϡ
~~ѹȻϰġѾˣ绻ζ˧~Сֿʼ֪˴󵨵Ľ顣
һСҲһŶ
ǾͲشˣҾ͹˰ôʣԶɫ㣬㡭ûСƨϣߦȾӭɹ
Сҿʮ֣ٿҪİˣ
ȻԿǣƺǱˣСٵһεγɾ͸Уֿʼӡ
ϰǰ˵ŲǿðͿԿܶҿŶС۾Цһ죬ѽ~
㽶֣ϰõľһ˧磿Ҫǻʱ֣ͷʶǴпڳҸ̴ô죬ҲˣҪʲôƤġŻ~~ȻţСĺë׶ˡ
һΣСҲ˵ˣλƵ뿪ңȥʿҲкõӣ˵ɢӣǮȥҲ˵ǹ֣ʵȥС̯һɫ鿯СϾѾʮˣܻᡭµĻƺܲСͬ־һµǮȫݹˡ
磡иʮһ˰һ¡ʮʮͬʷڼ̸µļӡۡǴǧ治аС۾ֱðмֻëзһȻ䣬һ뷨СԴһˮŶ~~˾ϣҴҵܻؼҡ
غѽСһ̾ûӲôˣոճŲʮӰɣôˣϲЦտһӵĺö
ӣԶˡ
ۡ㡭 ʵҲó
ۡƯĿѼ ȫ۵µţֲá
ӡʣٶģһЦӡ
ǡϰҪ˰ɣСǰһ
뵽һ⣡
ŶżҲ뵽һ֣
ֻĸӶ۷Ž⣬Цһ֮ȻЦ
ȻĸӣԺ˵
ȻӢͬҲüЦ
ǣ֮СġСѼݡ~~~~~ 






ҵ迪Ѽ ֮ ׻Դ֣



ҪѼݣͬ־ѼݣԴȻҪඣСû취ˣ˼ҿɻǳءֻпĹϵˣ黹Ǻܼ֡һСոշѧؼң˧ڼҮ
~~~أС۶ֱˣ̫˷ܣԺһи˧
ѽС𣬿ͼкüЦȻ˧Ŀأ
ҽС򡣡
ҽа֡
ҽС
ҽС
ҽСꡣ˧̱Աš
~ҽС𣬱ǶССҲԡСЦ˻һûסûϵշ
裬Щİ
С򰡡ǺǮĿǰҳУֽԡڰأܳgayԾһ£ССѧǱǵŮѱģΪǵŮǿȵͬŮСΪ漰˽ԡЦ߽͵
Щ綼ǵһඣСȻһ룬ԭϵĴжú
԰һβźټһߺ졣
ǡǵһεĻ˭ʺϵ˭ǸСֱˣڵ˾Ŀ֪࣬ơ
СֱҪεУҪİɣ
ǡܾǡˣΪҶԿγ̼򻯣С˵ͷͷǵĭɣֻܵȴ˫ۣԴˡ𡢡 
~~~~Сʱ֮éٿСҲһϵģúһ飬һֹĿ⿴







ҵ迪Ѽ ֮ СĹ֮
ҲҪ衪~~~СץסſҲҪȥ
ֻǽ̽ο㻹ȰǿⰡɷѿģƭ
Ҫ~~~һҪҪһô죿衭ҿΨһĶҮһûùҲ֪òʹʵһ£ǡƨòܣӲ߽ҲĶСɰڴһ١֮ƣСᰢ~~~
СҪĽŶ
ˣ
һȺԱԽԽӦСأС۹·˷̿ʼжӡ
ȰСźöӣ·Ѹɾ˵ţСӶͳ˼ֱߣһһ
ڸʱ䣬ǵСܵŪȻԵһ˵ĳΪ׼+n,-nôʼСһһ۵ģʵҲڷֹûйϵ˵Ļܾһɡ
ôʼСʼһãСֽʣ׼¼
nһλͷߵͨ졣
n0.5ڶλҲͷ
n+2λֱͦ壬ֺӡ
nn!λʲôһνӡ
ţСñʼ⻮˻ͷƤҿʼ䣬һܣŹܣĺŹš㲻ǰɣnſ˵ҲһװˣnСܣǹѲҪѡˣСô˼ţԼĸԸž
ɴԱ߹ĦˣСε̾˿
ιǸʲôأŰúţλͳˡ
λòôĺžŶžƨƨҪ
ʲôʲôûʶıһŶţǣȥϴּƨƨŪɾ˵Ūͺˡ˵ţСƿҺλܾ
ĺţȫ׸ǣԺҪǵŶ
~~~СܵܶĶöŶԱߵžһֳݵ۹⿴С
ǻ˵˭ǲѧԭʼĶС
ʱλѾ׼Сѵʼ~~~~~
ҵ迪Ѽ ֮ СĹѵ
׶ʮ֮˳ܾˣȻ֪˵λλû治ΪУһԶԹ˵ͷǶͤͤӣСⶼţС̿ˮСĵܵҲǸǵģ֮ͦǡۿ~~Сеˬˡ
ĺţʲôĺš
˰ɣܲˣĺžһ
УֲǺŮҶǴҮ
Ҫôأĺŵˡ
öſڴϣ㴫ĺžžǱҲģ
ޣˣˣСִӶȡһСƿӣˮԵģðɣȻ߶ʹġ
ۣСܵܺʲôأžСǳݣҲŹ⡣
ⶫǲĨﰡžǴ;һžСƨƨĨٿһžǽи꣬ŪС೬٣СܵҲʵˡ
㡭Ĩ氡ҲҪĨȻĴңС˴ֵĴָ
ޣֻž٣ͨ죬һָʹȥˡ
ѽһܾܲסˣһ飬ǻûС˵ʲôžһžĺ󱳣İοˣָͷڶȥ
žл۸ӵˬ˵һžСζее飬еʹ~~ͷҮȥ˽ȥˡ
šðŶ~~Сһ߶ҪڵˣžᣬôżҪȴһͽȥڰοһžоŶ
᲻ʹžĵʡ
Ӧòᡭϣ˵һ룬С;Сƨƨһʹ
ţ㡭ʲôСŵԼˣӲ֪ʲôʱСܵֵģСƨƨҲ֪ʲôʱžָסˡ
ոСӣԡһ޹žճСָͷҲڶ
СֿǱԣ~~~浽߳أСܾĶˣܲš
~ҪûϴžͷСˣСһ
ȲŪôžתǰ棬ָסС𻹲ִСѿѿ
ÿɰŶĺСӣžסС
~Ҫ˼ҡ˼ûСˣǸһﰴãﻹСܵܣȴˡ
ۿһСܻڽţź˵~~~
СҪŶôоҮŻɿ˥С
ŶҲŲҪôСĶСһͯӡ
ŶίίĵͷǡҿɲԳСļֻҪСҾͺøˣΪҺóСŶֻһڴ
šǿǿСδ䣬СѾˣõͷѽСһȥ̾ˡ
ѽ㡭һˣС˵ˡ
ǲǺüϾͺŶžСļ˳ָˡ
ššˣССϺŬڳ鶯˷
о͡ѽ㿴Ҳֻţ̡СðĳˣۡöŶ




Сˣ˵~~~~~~~~~~~~~




СÿɰŶžԼָ




~~~~~~~Сһѱһᣬ˵İɣ




ĻܻᣬҪСŶžذС§ڻɵɵЦ
ҵ迪Ѽ ֮ Сܣ1




ǲŪСС߷߲ƽճС




ǿСǲΪϰˣԸһõİ취ǡ




ΪʲôС𲻰СƨƨãСί˵




ҪðСƤЦĿС꣬ٺٺ٣ΣôСĻɫҲŲȤأnôĶôУȻǸڣֶ˵ȡЦǶԲԼ




ǴĺòãС꿴ûļ󣬻һνӣһΣұ֤⡣




ҲأСһЦĿСꡣ




Ҿ͡ꡯ




Ŷ̫డд⣡㵱ɵϰù֮šꡯʲôð㵱ǰ׳հ˵þͲãˣǸ˥УСҲҶ˸֮СﳤȥСһ࣬úʹԲˡ
*********************************




~~취賿룬Сܵ裬ҲСȥˡ




ȻĲоӲİ˸ĺǷСӣӲ˼ҴӴ




Ǵ˵ŶǺǣ仰ʲôʡˡ




ôô˵ģһ˦ӣֻطЪȥҲ




ٺٺ٣Сʵû취Լ˷ˣЦһſˮİ׳գӲģ鲻ͼˣ




ٺٺ٣ˣ治ˣ¶;˷ܵܲˣnСʱںɫҹĻﶼصСĿЦ
*******************************




ۡС˯úһŶÿɰС𣬱˰˾ȻһоҲûУСģСӣ治ء




СС߽ϴּ䣬С˵֮ǰҪȰɾȻֶӵģ´ʩδ֤Ϊţ




磡ĻŶҩˮѾεСƨƨˣһ㣬һ㡭




ѽСһ̫ˣСеˡ




СüͷʹʹŶ~~~Сһ۾




ԼƺۣһͰ͵Сӡ




ڸŪɾĻɲޣСڰ˫ȷֿ




ʹſ군ˣҩˮνȥ˵˵




ȳͺ˰Сֿʼ׳ƵЦ




ҡҡԼŪȥСС껳ƴϧûá




ҪҪСŪСıŤҲˣץС𲻿Ϸš




㡭㡭㡭~~~Ҳ~~Сܵ˰ˣԽԽʹۿҪˣҪǡŻ~Ƕඪ




㰡Ҫ̲סˣ鼱֮£СָͷСļ͹ȥˣСҲ̲סˣûгͿʼϡﻩ~~~-|||




ҩˮ̫ˣСһӾ˰Сʱ⣬üˮˣСˮɾŰϴ




~~Ҫ~ŶСûˣͬҲûСˡ




Ҫ~˼ҵȵúÿ˵С꼯ԼԼҪԼֱŵģھѾ




С𣡱˯ˣ~




ŪˡšһʹС




~Сֻһ߿޵÷ˣܲʬ£Ųô򵥾ͷˣûо飬´εİɣ 










ҵ迪Ѽ ֮ Сܣ2 






ܷϣСּᶨվСſڣͷϵ˻ûкãС˺֣ô£ŶӵΡ




Դҹ͵Ϯδ죬Сͼǿ˷װ




һ죬 Сں޷´ȥ5kgĲͷ




ڶ죬 Ϊǰ֮ССĵĴţȷ֮ܽȥ˭֪İѲſƣСֶͷ




죬 ССģȫϲСĵȥϿ~̾1/n룬һͷϣϽ䣬εڵء




ʱ䣬С걻ĥÿν˲˹ѾǵˣϻͻȻµԼɥȪܣСԸ⣬һգţ









ףƲƲҮߣʹӴԿҪİŴ򿪡



ۡϨˣߣԱֵͲաİѵƴ򿪣ʲô¶ûа



ǰɣСİɱӿˡ




衪Сҳ




Сҳô뿴ĶԻ




סһҹ~~״




Уп˰ȥС￴ţС̾һģС֪ѽ~~ˣС绰׼ȽϺá




㣡һҹ~~




С֪ҺϲСģСסﱣסһԲС£ԡСȥĵطʰɣ




˵꣬С̹ţɱСȻļ޻ҪС֪~~ѽ~˯˯




ľͲ˵ˣǿС֥áؼǺΣҲ汻ʶ۸ãСôģͺԤԵһģһŪɳ׾ˣ˼СǸɴڷˣⲻǱ˼ҳˣǾԺйϵɷģ




СҸŶС˷ܵһӰС𱧽ֿҧģˣ




~~~~~~ҲǺ۸ңСίһѱһᣬˣԼơˡ




УҲŲ۸СҺϲСģСޡС꼱æѺĻˡ




أ~~˭Ҫϲֻ۸ңҲŲҪƨƨ~~ŲҪ~С͸ˣӲĲֻˡ




Сˣ޵úÿҺʹģ




Ŷ˰ɣСƤϿ޵÷۲ңǺгɾ͸аС˵Ļһɳ嶯ȥɱ




С޵ôҲһҪСģͱ׷~




**~~ǰɣСһӲѽҵȻǵС껳ˣ찢~ûô




ͻȻһճأС쳤ХӰֻڴǰһ£漴һƬڰɶҲˣʱһһţתۼȥĸСʱ




~Ҳ




ǰոôڶСأ




ǰɣô㻹ҶԵط




Сڿô




ƨǲǣ




ǺǣܳԲԣ




Ҫ




˺ˣһˣ˵һԵģ




԰




Үˣ




8ذɣԭĸСʱ˶޵Դı˿~״
****************************8




룺~Ҳͬ־ǿ㣬С޲ɻصô˵Ҳ12ˣĸСʱôҲˡ




ǰոôڶСأȷ˿ˣﵱȻڵʲôˣСֲԼ⣩




ǰɣô㻹ҶԵطСȻָǵԴ˿λã




СڿôֻҪСĿ佱Сһһܸˣ




ƨǲǣСС˵˿̣ܶԻޱ˿һʮ֮ʵҲú͵һ˺




ǺǣܳԲԣȻǱ˿ģСС




ҪС´磬ô˿һ£




˺ˣһˣ˵һԵģ



˾ţ֮СڰѱˣΪС겻ǵ繤Գɾ͸һࣩܶ




԰˿޺ˣȻҪԵǲǿ




С׳հװ˷һľѵĻᣨСܵĻ类˳ˣ





ҵ迪Ѽ ֮ Сܣϲ֣
СˣͷŶ~~




СôˣС𲻶ԾСĵʡ




ˮ~~СƴرܡǵڣС飨ѼݵһλȫְѼƫƫҪˮӿͣʲôȺãҪ뿴ʵģŲҪӽӾأο߻˸ΣС꣨Դ޺˱˿˵Ĺϵһεθƣ




ιҪȥˣСǷ־ͲСòȥֱСˮ




쿴üŶ~~ôѶȵĶôСֻ۾ֱˣСҲɫ࣬ǿСӣŶ~~ѵƨƨĺôСʲôأ0~~~Ǹ˵ĵܵܺô˧ŶСɹ˲ʲôˮˮˣ£ôöҪôСƨƨʼˣʹӣСıǰٷ֮һٶʮĺˬĽأԭǺԭСԼʱ򡭡˵ʵʹˬѲɱǻҪõԤУǿǣһʼôĻ˵˵ģһСһԵĻ



һԱߵС꣨⺢Ӿǡ˥еǶǺСôҪС׳Ͷ~




ɶףС걻ˮǺˣǶ~




˵Ҫƨƨ~~Сı飬ȫһɫħһıƽС꣬ǰ~~⵽ǡСҪǿ~~~~




ˣΪɶСֻСֺˬȴСҲʮ֣С걩С




š㡭¹ſӾرߣʹģȻоܺõĲͣ¡




Сһ㣬ҪòʹˡСһ߰οСһָΪСĦָͣء




šŰ




СеúöϾָˣԼҲˬˣССӷ˸ͺСļ




š~~СӺܹԺܹԵĴĿָ̣




ѽ~~~ˣ̫ˣҪѹ~~~СԼƨƨѿһôĿӣôҲղȥԽָԽˡ




ɣţϲСһģССְŪСˡ




ҪСꡭȥúܲھСǸŰôѹһܵӡ




Сôлֻðָ˳ǡ




~~~~ոúһʲôˣСնġ




šˣ




ҪôأСЦĿСֱСܲˡ




ƨƨҪǸȥôͺˣо˼Ұ




Ҫ˼һûС~涼ҪըˣС껹ǲˡ




ҾͲˣС




ǡСҧҧְСӷ˸ƨƨѾָŪֺˡ




ʹСʧ˳ۣȸոյֵָĶˣһóӣ˺ϵʱȫȥˣСǶnǶ




㡭ôֺó~~




Ǻǣʵҵĵܵܿn+׳Ŷ




~~ƭңš




СƨƨԺֻ׼ãòã




šš




ŶǺǺǺ~~޺ϡ 






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ڴ߹ս̾Сˡ̳һΪˮĽۿ󾪣ССսһԽսԽ£СѪݡ֮ƣ϶԰ο֮ɫϲ֮飬ڳˣ뵽ˣֲۺᣬν첻˰

 

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