2017年7月17日
ACM Adding Reversed Numbers（summer2017）
摘要： The Antique Comedians of Malidinesia prefer comedies to tragedies. Unfortunately, most of the ancient plays are tragedies. Therefore the dramatic advi 阅读全文
posted @ 2017-07-17 23:10 听说这是最长的名字了 阅读(268) 评论(0) 推荐(0)
ACM Bee
摘要： In Africa there is a very special species of bee. Every year, the female bees of such species give birth to one male bee, while the male bees give bir 阅读全文
posted @ 2017-07-17 21:52 听说这是最长的名字了 阅读(229) 评论(0) 推荐(0)
ACM Self Number
摘要： In 1949 the Indian mathematician D.R. Kaprekar discovered a class of numbers called self-numbers. For any positive integer n, define d(n) to be n plus 阅读全文
posted @ 2017-07-17 17:28 听说这是最长的名字了 阅读(409) 评论(0) 推荐(0)