As  you mentioned your rank as  71 in AU .....
There are good chances to get artificial Intelligence and Robotics postgraduate program in Andhra University... go for counseling and use your reserved quota to get AU..
Artificial Intelligence and Robotics  is a full time postgraduates program for 2 years ......
For more information click here:-
https://www.careers360.com/colleges/andhra-university-college-of-engineering-visakhapatnam/mtech-artificial-intelligence-and-robotics-course
https://engineering.careers360.com/colleges/list-of-automation-and-robotics-colleges-in-andhra-pradesh
All the best!!