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if(((tree[t].col)&(tree[t].col-1))==0)有什么作用?

Posted by donkeyinacm at 2010-04-04 13:35:15 on Problem 2777
In Reply To:来晒代码 Posted by:gnaggnoyil at 2010-01-22 17:08:25
 if(((tree[t].col)&(tree[t].col-1))==0)
有什么作用?

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