题目简述： 对于序列a有两种操作1. 输入4个整数 1 l r x表示将a[i]修改为(a[i]*i^x)并输出l~r中a[i]为质数的个数2. 输入3个整数 2 l r，并输出l~r中a[i]为质数的个数题目出处：[小白月赛39 D](https://ac.nowcoder.com/acm/contest/96656/C)代码：[AC代码](https://ac.nowcoder.com/acm/contest/view-submission?submissionId=73414949)