2021年11月22日
1058 A+B in Hogwarts (20 分)（进制转换）
摘要： If you are a fan of Harry Potter, you would know the world of magic has its own currency system — as Hagrid explained it to Harry, “Seventeen silver S 阅读全文
posted @ 2021-11-22 21:50 勇往直前的力量 阅读(61) 评论(0) 推荐(0)
1049 Counting Ones (30 分)（数学问题）
摘要： The task is simple: given any positive integer N, you are supposed to count the total number of 1's in the decimal form of the integers from 1 to N. F 阅读全文
posted @ 2021-11-22 17:38 勇往直前的力量 阅读(80) 评论(0) 推荐(0)