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还是不理解,sample怎么分成2份的啊

Posted by scu07t04 at 2007-08-05 13:06:36 on Problem 3241
要么分成4份,要么分成1份.
因为3,4和2,3的resemblance为2,   4,3和3,4的resemblance也是2,
3,1和2,2的resemblance也是2,怎么分才能是两组哦?

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