Instruct: Classify an Amazon review as either positive or negative.
Query: Hard to understand

I had to use this book as a student for my discrete mathematics course. I hated it. I found this book hard to understand and follow. The ideas weren't clearly explained. There were lots of problems at the end of the section that were barely or not at all explained in the chapter. There were only a limited number of examples in each chapter, and most of the examples finished with "the proof to this is left as an exercise to the reader." If this is a book designed to teach discrete mathematics, I would assume the reader wants something that wouldn't leave every example as an "exercise" to the reader. I want a book that gives examples, lots of them, and finishes each one. This book could use a lot more of that.