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Why?

Posted by huhaoo at 2019-03-07 12:16:28 on Problem 2298 and last updated at 2019-03-07 12:17:10
In Reply To:數據陰險啊= = Posted by:Sinya at 2010-04-14 09:44:06
> 數據異常陰險。
> 
> 那個一個南極一個北極的情況非常非常非常非常非常非常非常非常陰險。
> 
> 是unique answer不是unique arc.

Why?

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