I have already graduated with IB Diploma, and my grades are horrible
Physics HL - 6
Maths HL - 5
ITGS HL - 5
Chemistry SL - 6
English SL - 5
Hindi SL - 5
Extended essay (Physics) - B
Do I still have a shot at schools like Purdue, GaTech, UMich, UIUC for computer science?
I know my grades are way too low. If I score well on the ACT (like 32) can I get in with these grades? What are my chances?