Module Matrix multiplication

Matrix multiplication

**Frequency: 1.5/10** Matrix multiplication is _mostly_ used in competitive programming to solve DP problems with unreasonably high constraints.

Resources

- [USACO: Matrix Exponentiation](https://usaco.guide/plat/matrix-expo?lang=cpp)

Problems

Fibonacci 2 123 / 127 1500
Martian language 2 42 / 44 1500
Hakurei Shrine 2 29 / 53 1600
Number sequence 39 / 49 1700
Chess 12 / 26 1800