(NP) :
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Ϣĺ棬һ֣ϲĿ⡣
Ŷ㲻ǻû𣿡ϣĿҲҰˣ۾£ĻϷʡ
²ѵȻһŭӣϣһĿջصǰ˵һֺ𣿡
ߣѪļ--
ߣúҲ̫ѿ˰ɣʱ·ҽĻѿˣòáҲ̫ˣüͷһ壬ij棬ԼķʽҲܽܡ
= =bǡ
ϣεһüԺļԸе˴δе
ˣȻѧ칫Ҵ⼸caseɣ죬ŻҪһҪ˰ɡ
ϣӿ칫ҵIJ
Ҫȥ칫𣿡ϣҪͨ칫ҵĵ·˽Ųʵ
ɻصǸƵĵطһҪһˡǵģ治֪͵᳤
= =bDzˬϣһ˵ԼҲҪɣ
͵Ӱɡ= =bӡ
һӦ𣬷ϣʧȵĹյ
ߣƵġ
ϣ䵭̬ȣʹϰ˺滹һЩ
ʲأ
ƯĽüšһţȻһ
ԭǰͣԭأ˫ֲ˧ƣڵȴʲᡣ
ȻһʵᱳܵһĿ
ٺ١ˡ
âһ飬ת
ؿǰվһοDZӰ
ιУ·۾ȻײүˣݺݵؾסѾԼ˹nε죬صȴ籵ķӦߣҪ»ʲᷴӦѵҲǸԿ= =bһжվмİɣ
Ϊһ·һ߿飬һʱûעǰΰ·ϰֱֱײ˺ᱳһײҲ˼·ϣʵ
ײ۾̧ͷȻŷԼײ˾ȻǸͷ鷳װIJο飡= =bóijƺš
ƬֻעŭĿû˵
ĿɨܣĬһ£˵Ŷߴˡ
= =
գԴ𣿣- -||ҪǵǸǸǸ߲ߴ·ʲϵ
һƬߣΪ˻籵ĴҪʼƪƪؽһʱ
Բ𡣡
òֻԼϵצȻòضûµļؾ¹Ǹ
Ȼᣬο鱧ڻںĿɿڴУתۻԭ·߿
㡭ʳָָǺû·뿪ıӰ˵
ɶɶɶ
ⷡҶһˣ
ˣ
ѪУ
ȻҲ
ˡ
һ˵ij嶯ȵĵذйֻߵĿ졢Ҫץ
ŭҪʱִֻỷסǽʵš
įˣҪ˰ο𣿡һͷںᱳdzdzЦ⡭
ŭлعһ㶣һ̣¶һõЦݣ𣿡
Ŷ㻹ǵء˶ؾ죬˲ɢζı
ȻˣҡЦתһ§ס˵ϸԼһаȵغסСɵĶרء
ǰרġˡ촽һЦ̰ͫؿݣջĵϢϸָ˺ıĥꡭ
18.
Ǻǣʲʱģ§ԼĻһһЦʵ
ɡסǴЦȨ
ʲɣDz죿üͷһԼ˺Ļش
ƽϣһȥˣȻҲ˵ǺȥˡߣDzǺܿأüšúܽбһۺ棬ƺЩ³ĻŨŨĴ⡣
ȥһҲԺĺǴƬĴףؿһƣԭЦݵһ
갲οظ˸ţȻЦŶ㲻𣿡
ˣһᵽǸҾûᡭˣûغֹסʻɫڣ뵽ǰ챻ӵ֣ƽµȻʲᶫݺݷйһ¡
ŶŭݣӦһƯĺͫζһһ˿Ӳļʹâ
ᡭȥϸĿż⣬ںĶԷ롣
ǣЩû뵽һ㶣۵ײԾһ˿ԥ
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