For 4 year course 

You haveto score 270 above in JEE mains to get cse in iiit Hyderabad.

For ECE it was around 245 .

Though the cutoffs are tentative and tend to change every year.

It mainly depends on JEE main percentile .

There are several rounds for it 

For 5 year course 

You have to give an exam ugee for dual degree and there will be an interview too .