What level of preparation do Samay and judges do for the jokes?

I'm sure Samay has written down a list of keywords based on the judge panel, especially for people like Poonam Pandey etc. But what about contestants, do you think he has prepared jokes beforehand on them also, for eg one contestant had a bad leg, someone had an eye issue Or you think he has no preparation, he just goes and wings it. Second question, does the other judges get information about the contestants and their forms to prepare beforehand. I mean if I'm a stand-up comedian, i would be very embarrassed if i go there and not make asingle joke. I would want to prepare little bit and ask Samay for information who is coming