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虽然Ac了可还是不解

Posted by Snow_storm at 2010-02-21 02:48:08 on Problem 2282
In Reply To:why Wa???????!!!!!!!!!!!!!!!!! Help me !!!! Posted by:Snow_storm at 2010-02-21 02:28:41

if(x==a-1 || x==b)
   f[0]+=weight;
为什么要把这句删了才AC?
可0不是可以当个位数么
如果少了这句个位不是少算一个0么

虽然对于总的结果 这句无关紧要 因为  若假设b>a
则（Find(b)-1）-(Find(a)-1)=Find(b)-Find(a)        

可是加上这句为什么Wa????

Followed by:

Re:虽然Ac了可还是不解 (39) lijinwu 2010-02-24 17:41:11

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