2018年8月7日

B - Dropping tests

摘要: In a certain course, you take n tests. If you get ai out of bi questions correct on test i, your cumulative average is defined to be . Given your test 阅读全文
posted @ 2018-08-07 19:55 huas_psw 阅读(152) 评论(0) 推荐(0) 编辑