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为什么啊!第一组样例0的SG值为啥不是0?

Posted by bsshanghai at 2011-10-05 10:58:14 on Problem 2425
根据mex(x)函数的话,
应该是sg(0)=mex(1,2)=0吧!
但是正解算出来SG(0)=2;这是为啥啊?
鄙人表示很无助..求各位给个解释....谢谢

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