2005*20042004 - 2004*20052005
= 2005 * 2004 * 10001 - 2004 * 2005 * 10001
= 0
20042004*2005-20052005*2004?
20042004*2005-20052005*2004?
数学人气:682 ℃时间:2019-10-03 22:49:01
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