Dear aspirant. Hope you are doing well.

For securing CSE in Top 5 NIT's, a student must get a percentile around 99.4 meaning a rank below 5000 and marks more than 190 out of 300. A student who got 99 percentile in JEE Main 2021 may get the following options which is based on JEE Main results of last year  . You can check the previous years cut off in top NITS through given link below

https://engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches

Thank you