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还请大家帮帮忙啊！！我初学动态树

Posted by shuaige123 at 2012-06-13 12:49:08 on Problem 1986
In Reply To:本题一直在WRONG 我用了动态树 要么帮忙看一下，要么帮忙出刁专数据吧! 对拍了一天啊 Posted by:shuaige123 at 2012-06-12 13:37:31 
还请大家帮帮忙！
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