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????????? ???????2014-10-11 14:00 40407??????:

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????????????3????????佫????????????????

?佫??????0???1??????佫??????????????????1????????7????????5????9???????8??(???????t)???????????????????13&12??????

???????????(0??)??????13???12??????????????????1000??1500??2000

????1??5???????????=100+200+400+800+1600=3100

??????????????=1000+3100=4100

13????????????=1500+3100=4600

12????????????=2000+3100=5100

???4600??5???????????4600*5=23000

???????????1??5???????1000+2000+3000+4000+5000=15000

5???????7????????????????=5*15000=75000

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