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本想用线段树，但是遇到一个问题，不好解决！５５５５５５５５５５５５In Reply To:这题什么意思！！！！！！！！！！！！！！！！！！！！！！！！ Posted by:syict05570108 at 2007-08-29 12:37:22 Followed by:
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