KirinSB

摘要： 题意： "传送门" 已知递推公式$x_i = a x_{i 1} + b\mod p$，$p$是素数，已知$x_0，a，b，p$，给出一个$n$和$v$，问你满足$x_i = v$且$i include include include include include include include 阅读全文