It was my pleasure to take part in Div-2 767 round. But when I was checking the standings, I was shocked to see how can someone submit 3 solutions in 0 minutes of time? If you don't believe this than see the submission of handle-** MysticPanda** (he got rank 17th). What's your thoughts on it? Here is the proof-
It could have been that he lost his internet connection and when he got it back he sent the exercises he had solved. It could be that.