https://junpyopark.github.io/Gurobi_tutorial/
https://www.gurobi.com/documentation/9.1/quickstart_windows/cs_python.html#section:Python
https://pages.gurobi.com/rs/181-ZYS-005/images/Videos-MIP-v18.pdf
https://colab.research.google.com/github/Gurobi/modeling-examples/blob/master/intro_to_modeling/introduction_to_modeling_gcl.ipynb