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就是如果增加一条root边 可能没减少总费用,这时就不要继续+边了In Reply To:狂wa...看到不少人也是wa了好几次才ac的，大牛们说说原因吧... Posted by:fat_june at 2008-04-10 15:54:33 Followed by: Post your reply here: |
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