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Re:虽然可以AC，但怀疑这个思路的正确性

Posted by gogdizzy at 2007-04-18 05:22:43 on Problem 1013
In Reply To:Re:虽然可以AC，但怀疑这个思路的正确性 Posted by:gogdizzy at 2007-04-18 05:08:48 
我错了，楼主是对的。
只要出现不平衡，假币的绝对值就一直在增加。
而如果有某个币只和假币一起出现，并且只在一组(或只在对组)，那么虽然它的权值和假币一样，但是这题就不可解了，而题目说必然有答案。
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