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 2 101 / 105 1500
Martian language 2 31 / 32 1500
Hakurei Shrine 2 19 / 37 1600
Number sequence 23 / 33 1700
Chess 7 / 18 1800