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 2 212 / 224 1500
Martian language 2 81 / 85 1500
Hakurei Shrine 2 65 / 93 1600
Number sequence 81 / 94 1700
Chess 33 / 52 1800