henuzxy

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 fo

传送门 Given a n × n matrix A and a positive integer k, find the sum S = A + A2 + A3 + … + Ak.Input The input contains exactly one test case. The first line of input contains three positive integers n (