30分求调

P5431 【模板】模意义下的乘法逆元 2

exgcd会T，建议用线性递推
by Infinity_Fantasy @ 2023-08-23 13:28:16

![逆元](https://cdn.luogu.com.cn/upload/image_hosting/wzgh8yax.png?x-oss-process=image/resize,m_lfit,h_170,w_225)
by Infinity_Fantasy @ 2023-08-23 13:30:54

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