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Re:居然让你暴力过了= = 确实是树，不是无环图In Reply To:居然让你暴力过了= = 确实是树，不是无环图 Posted by:xuhaoran510 at 2011-09-15 18:11:15 我的意思是，题目中的输入a b c，并不是a为父节点，b为孩子节点，不是单向的，是双向的。如果理解为单向的，那么入度为0的点就不止1个。 Followed by: Post your reply here: |
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