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似乎zoj也是这样子的

Posted by frkstyc at 2005-08-17 15:22:27 on Problem 2584
In Reply To:题目描述有误 Posted by:leemars at 2005-08-17 15:21:09 
> 1 < X < 20
> 
> It should be
> 
> 1 <= X <= 20
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