My brother studies at IIIT M and the coding culture there is not limited to coding, i.e. the competitive coding, there are only a few of these competitive coders but they are quite dedicated and get placed with companies like Google and Microsoft. A lot of exploration can be done in different fields as well. My brother has enrolled in the Integrated Post Graduate (IPG) Course in IT, which is the only branch at IIITM G with 129 seats - a number lower than seats available at other institutes. It is ranked on #100 in the NIRF ranking list.
Also to be noted are these -
AASF is the only club that holds coding competitions, mostly for first-year students, but some programmers turn out to be very good.
The annual programming contest is what coding enthusiasts at the college look forward to. Finally, it depends on whether you are interested in coding and want to truly participate with dedication, if so, your seniors will support you the most.