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CC always becomes very depressed at the end of this month, he has checked his credit card yesterday, without any surprise, there are only 99.9 yuan le 阅读全文
posted @ 2017-10-19 22:45
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题目： It is well known that AekdyCoin is good at string problems as well as number theory problems. When given a string s, we can write down all the non 阅读全文
posted @ 2017-10-19 21:03
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