Hey Aspirant

The answer to your question is yes , you will get admission in Madan Mohan Malviya University of Technology,  Gorakhpur through rank 779 in OBC category (assuming in UPSEE) . If you wait till 2nd or 3rd round of counselling you might get CSE brach too.  Also for your reference I am providing you with a link to predict a college through JEE Mains  rank

https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp

I hope this helps!!