The most important thing about your grade
memorizing vs understanding
You can memorize your way to a 3 or a 4. You can understand your way to a 5 or 6. Please make sure you understand this distinction.
The most important thing I care about is if you really understand this material. The most important thing you should care about is if you understand this material. I also care after you, our class social environment, and other stuff. However, what matters most to me if you understand computer science.
Understanding something isn't a yes/no or true/false. The best way to answer this question is to ask yourself to what extent do you understand this material.
I understand you worry about your grade. You should worry more about how well you understand and can apply our material.
Consider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument.
Use an idea, equation, principle, theory or law in relation to a given problem or issue.