I guess it's the same reason why Indian Americans here in the US win spelling bees. They care about it more than others. These students go through a ton of trai

I guess it's the same reason why Indian Americans here in the US win spelling bees. They care about it more than others. These students go through a ton of training with coaches and camps specifically conducted for this purpose. There's a lot of nuances and tricks to be learned in competitive programming. So while the participants obviously have a high aptitude, it's the training that puts them on the top.