A few days ago, I was looking through submissions from round 1062 (div. 4) to check for cheaters. I had the idea to search for submissions made to a problem after AC. Surprisingly, there were a lot of times where people got AC on a problem, and submitted completely different code to the same problem a few minutes later (which also got AC). kundan_kumar_v and venkatsatish03 did this. The most interesting was Mr_prince_sahu, who spent 30 minutes programming 3 different solutions to A in 3 different languages