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 2 195 / 204 1500
Martian language 2 70 / 73 1500
Hakurei Shrine 2 56 / 83 1600
Number sequence 72 / 85 1700
Chess 28 / 46 1800