The paper linked anticipates your question in the sentences after grandparent's quote: > The blow-up is not due simply to the fact that we used C++ instead of

The paper linked anticipates your question in the sentences after grandparent's quote: > The blow-up is not due simply to the fact that we used C++ instead of pseudo notation, nor because our code style may have been verbose. Converting the algorithm into a practical, production-ready system involved implementing many features and optimizations – some published in the literature and some not.