Fibonacci Description In the Fibonacci integer sequence, F0 = 0, F1 = 1, and Fn = Fn − 1 + Fn − 2 for n ≥ 2. For example, the first ten terms of the Fibonacci sequence are: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, … An alternative formula for the Fibonacci…
矩阵乘法加速线性递推的典型 大概套路就是先构造一个矩阵\( F \)使得另一初始矩阵\( A \)乘以\( F^{x} \)能够得出第n项 跑的飞快 虽然我也不知道那个矩阵要怎么构造 或许就像我使用了瞪眼法和枚举法 #include <cstdio> #include <algorithm> #include <cstring> #define int long long using namespace std; ; int n; struct Matrix{ ; in…