I cannot say what rank you will get, but CS & IT usually get filled by top 300–500 rank holders. If you get is top 300 then you have a good chance of getting in CS. There is a other way round if you don’t get in top 300, you can get the seat through management quota, but the fee is around 80K-100K more than the normal fee. Otherwise you can take any other stream which you like and keep CS in waiting, if anyone leave the college you may get a seat depending on your rank.