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等级制度是怎么回事?sample里,为什么他都和等级为2的人交易了,等级为3的依然和他交易啊? 如果这样可以的话,为什么 1 5 10000 3 2 2 5000 3 5000 3000 4 1 4 400 3000 2 1 4 500 1000 3 1 5 100 100 2 0 这组数据是5700而不是5600? 到底怎么回事啊?乱马七糟的,题里也不给说清楚。 Followed by:
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