At Manipal core branches like CSE, IT, EEE, Mechanical, ECE etc have around 220-240 students per batch. So, getting CSE at Jaipur or IT at main campus would require a bit of luck. Many of the above rankers don't take admission as they only apply as a backup after JEE and other such exams. So you still stand a chance of getting you preferred branch. But you also have be prepared with your backup in case of disappointment.

All the best!