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 2 216 / 228 1500
Martian language 2 82 / 86 1500
Hakurei Shrine 2 66 / 94 1600
Number sequence 82 / 95 1700
Chess 33 / 53 1800