My guess is that if you have an interest in computer science, you will have the most fun with logic and discrete math, and will not have much fun with the calculus.
If you are serious about getting into a math graduate program, then you have to learn the calculus stuff anyway, because it is a large part of the Math GRE.
I have a degree in computer science, looking to learn more about math to apply to a math graduate program and for fun.
My guess is that if you have an interest in computer science, you will have the most fun with logic and discrete math, and will not have much fun with the calculus.
If you are serious about getting into a math graduate program, then you have to learn the calculus stuff anyway, because it is a large part of the Math GRE.
It’s worth mentioning that this is a US peculiarity. If you apply to a program elsewhere there is a lot less emphasis on calculus.
But you should still know rthe basics of calculus (and linear algebra) - at least the equivalent of calc 1, 2 & 3,