with 82 percentile in jee mains i am sorry to inform you that you wont be getting BIT PATNA.Howeverr this is not final as the cutoffs are for previous years.lets hope the best happens to us.however with your percentile you would be getting :
Xavier Institute Of Engineering C/O Xavier Technical Institute,Mahim,Mumbai
Dr. D. Y. Patil Pratishthan's D.Y.Patil College of Engineering Akurdi, Pune
Computer Science Engineering.
K J Somaiya Institute of Engineering and Information Technology, Sion, Mumbai
Electronics & Communication Engineering
and many more..
I m providing you a link for knowing colleges in which you can get a seat for your rank in JEE MAINS and category,please see the following link :
All the best