hello 

you can predict your rank in muoet exam as per your marks and your category at https://engineering.careers360.com/articles/mu-oet-rank-predictor. the closing rank of cse in manipal main campus varies between 1500-2000.if you are within this rank you can get cse in main campus.

hope it helps.

400+ would've been a safe score.  Because it's out of 800. Till 2018 there wasn't any negative marking and 77% (150 marks)  would assure cse.  

Now that there is negative marking,  at least 50% (400 marks)  should be the cut off for cse.