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原来线段树的底层， 效率不见得比直接计算高啊~~~

Posted by 411465294 at 2007-11-27 09:33:22 on Problem 3468
In Reply To:用线段树2秒多水过去了 Posted by:ghb044100307 at 2007-11-26 10:26:12 
> HOHO!!
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