6273

`2023-05-20 14:34:56 P6273 题解` 原题链接 [魔法](https://www.luogu.com.cn/problem/P6273) ## 题目分析 题目的意思就是让我们求每个字母出现次数相同且不为空的子串的个数。 ## 基本思路 然后我们能想到维护一个前缀和数组，然后判 ......

题面：Problem J. Master of GCDHakase has n numbers in a line. At first, they are all equal to 1. Besides, Hakase is interested in primes.She will choose ......