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Re:强烈建议加这组数据进去，练的解题表里怎么也把这题归为树型dp，想不通啊……In Reply To:Re:强烈建议加这组数据进去，练的解题表里怎么也把这题归为树型dp，想不通啊…… Posted by:escalation at 2011-08-06 22:28:15 这组数据是错的，不符合题意。 题中的要求是从一个能级到另一个能级只有一条路径，所以不会有环。 Followed by: Post your reply here: |
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