forgot one constraint: A+B+C=full set

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送交者: Enlighten 于 2008-04-30, 10:57:07:

回答: You're still wrong. if NOT is allowed, there are at least 12 for 2 由 james_hussein_bond 于 2008-04-30, 10:54:38:




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  • everything must be in A or B or C. (无内容) - Enlighten (0 bytes) 2008-04-30, 11:08:03 (222516)