As NIT hamirpur is a very college and cse branch is a great demand branch in india so getting into it is a very difficult task and you have to gain a marks of about 220for OC catogery students and for OBC its about 135 and for SC and ST its about 110 so there will be a small difference in these marks by the toughness And level of paper in thay year , so if you work hard then it will definetly your s . So hope that you will definetly get a seat in your desired collegr and all the best for your future