@[CCK_angel](/user/782554) 问题是考试的时候不一定能推的这么快啊,结论也需要时间推啊
by _zexal_ @ 2023-05-15 20:21:24
@[_zexal_](/user/754856) 枚举出所有反素数也不难吧
by CCK_demon @ 2023-05-15 22:01:01
递归的思路较难,~~本题不是蓝题吗,这么简单~~
by WhisperingWillow @ 2023-05-16 21:46:53