摘要: Codeforces-1753B Factorial Divisibility 参考:https://blog.csdn.net/qq_38236082/article/details/127500190 题意:问$a_1!+a_2!+a_3!+...+a_n!$能否被$x!$整除。 思路:暴力肯定 阅读全文
posted @ 2022-11-06 15:34 wegret 阅读(121) 评论(0) 推荐(0)