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同问

Posted by ArXoR at 2005-04-09 10:25:04 on Problem 2206
In Reply To:2 100 2 3 呢？ Posted by:T1 at 2005-03-08 20:52:45 
> some real subset S of {1, 2, . . .N}
> 是什么意思？
> Is {1, 2, . . .N} the real subset of {1, 2, . . .N}?
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