2019年10月6日
[概率]Lucky Coins
摘要： 题目描述 Bob has collected a lot of coins in different kinds. He wants to know which kind of coins is lucky. He finds out a lucky kind of coins by the fol 阅读全文
posted @ 2019-10-06 23:05 l..q 阅读(298) 评论(0) 推荐(0)