摘要：
Mr. Zstu and Mr. Hdu are taking a boring class , Mr. Zstu comes up with a problem to kill time, Mr. Hdu thinks it’s too easy, he solved it very quickl 阅读全文
摘要：
链接：https://ac.nowcoder.com/acm/contest/888/E来源：牛客网 Gromah and LZR have entered the fifth level. Unlike the first four levels, they should do some move 阅读全文