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 2 141 / 148 1500
Martian language 2 49 / 51 1500
Hakurei Shrine 2 38 / 64 1600
Number sequence 44 / 55 1700
Chess 19 / 34 1800