Hi. I have been doing programming for 2 years now. When I am practicing, I am able to do 1400-1600 in roughly about an hour. However, during a live contest I mess up and am not able to do even 1400. In fact, in the last contest I wasn't able to do a 1200 problem. I am aiming to achieve 1400 rating for now. Can anyone please tell me how I can go about?