?????300

??з???????????????????????????????????????????300??500??

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?????50???????涨???й?????2017棩???????????嵥????????30???????????й??

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??з?300?

?????????????????棬???λ??5000?-1?????λ?2н??λ??1???????λ?3н

?????????з?????????????????о????з300?????????????еλ?40?25?12?

?棬??????????????????300??500??

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