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虽然可以AC，但怀疑这个思路的正确性

Posted by milksea at 2007-02-11 00:24:30 on Problem 1013
In Reply To:一个通过的思路 Posted by:wrong123 at 2005-12-05 17:31:39 
最好是可以证明，对于题设中的Input，总能得到唯一解；或是举出反例。
因为看起来完全有可能被怀疑权值（不是次数）最多的币不止一个。
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