Marks depends on student's performance and the level of question paper. Last year the cutoff rank for general category in IIIT Delhi was 4912. As per the trend you need to score 171 - 180 to be eligible for admission in IIIT Delhi.

To be at the safe side you need to score 200+ to get IIIT Delhi as the competition is cutthroat now a days.

Hope you get my point. All the best.