快速幂的简单明了实现来的。对acmer的初学者来说，可以参考一下，比较简单，只是简单的快速幂，但是只要加工一下就可以实现矩阵快速幂了-Fast power of simple realization come. On acmer beginners, you can refer to, is relatively simple, just a simple quick power, but what can be achieved as long as processing power of a