How much calculus is used in Discrete Mathematics?

I took Calc 1 and 2 in high school and passed the AP exam to get credit in college for these courses. I am now in my second semester in college and I recently changed my major, which requires discrete math, linear algebra, and calc 3. The prerequisite at my university for discrete math is calc 1. I haven't had a calc class since senior year of high school (last year)

During the 2011 summer semester I plan on taking discrete math.

So should I do a full review of calc 1 or what parts of calc 1 should I review?