@[yuanbingtao](/user/694295) 肯定不能先把 $f_n, f_m$ 取模啊，有什么意义
by irris @ 2022-06-08 10:03:43
谢谢
by yuanbingtao @ 2022-06-08 10:05:35
不是，，，你证完 $\gcd(f_n, f_m) = f_{\gcd(n, m)}$ 不就行了吗，，，矩乘做法没错
by irris @ 2022-06-08 10:09:18
@[yuanbingtao](/user/694295) **矩乘做法没错，不要暴力推了**
by irris @ 2022-06-08 10:14:47
@[yuanbingtao](/user/694295) 先递推出f(n)&f(m)再用gsd
by GeorgeCanFound @ 2022-06-08 10:21:23
听你这么一说反而更晕了
by yuanbingtao @ 2022-06-08 10:31:55