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Re:试下这个数据,它的输出是-1

Posted by eraser_ruler at 2023-01-03 23:53:29 on Problem 2376
In Reply To:试下这个数据,它的输出是-1 Posted by:HYSBZ at 2005-07-26 23:56:25 
> 4 100
> 
> 21 50
> 
> 50 81
> 
> 1 20
> 
> 80 99
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