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????????
???20B,???20B,??10B,??100B?NPC???100B????????
???????????????????????????????10???12??????
???????????????????????????????
????????????????????????
??????????????????
???????
+3?????????+3??+3???810??+30???
3????1000????3???????????
???-30???????+1020????10000????20000
?????????50000????4000??????????
?????????????????5??
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