Hi ! It seems that you have a slim chance in nit Allahabad regarding CSE. Slim chance in the sense you have 40% probability that you will get CSE in nit Allahabad. It is so because of vacancy and your rank in OBC based category ranking. Your rank is pretty good from the point of view of general category and very good from the point of view of OBC .so hope you understand and best of luck to you. Given below a link will be useful for you.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/jee-main-college-predictor&ved=2ahUKEwill7yTiOviAhVaAXIKHXYPBhcQFjABegQIBhAB&usg=AOvVaw1pTMu5LewXe0n3JPiA8V2U&cshid=1560587156188

Hi there,
Hope you are doing well.
With 96.95 percentile, your CRL Category rank would be around 30000 and your OBC Category rank would be around 7000.
The cutoffs for MNNIT Allahabad CSE for the final round for Home State was 1669 and for Other State was 1167.
Hence you won't get a seat.
Hope it would help.
Thank You