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显然是这样的，如果存在 hamilton 圈，显然 (1,1) 在其中In Reply To:是不是这样的:如果从(1,1)出发不能到达每个格子的话,那么就不用去试从其他格子出发的情况了... Posted by:Bupt_Pig at 2006-03-16 18:28:30 Followed by:
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