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计算下三角

Posted by Morpheus at 2006-11-18 12:48:46 on Problem 3090
In Reply To:Re:欧拉 Posted by:yiyiyi4321 at 2006-11-18 12:14:06 
(x - y) = 1,(x - y) = -1,x = 1,y = 1然后只计算下三角．还有什么更优吗？
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