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一种下流的做法.....其实这题如果没有这些字母,而都是数字,那么确实不难做,但是多了这些字母,这题我觉得很难.实在没辙了,但是把这些字母都换成一些比较大的数字,居然ac了,如此一来看来题目的数据确实太不严谨了. Followed by:
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