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怎么很多题很多人都是排序加二分，弱问一下，二分是用来优化的吗？In Reply To:ft~,我还以为要用经典的LCA才能过,结果直接用排序加二分就过了...汗... Posted by:simbaforrest at 2007-08-06 10:09:53 > rt Followed by: Post your reply here: |
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