Q. Why don't ratings improve ? A. You are not skilled at competitive programming. Q. How to improve ? A. Practice and upsolving. Q. I'm doing that. Still practicing. But still ratings don't improve ? A. a) You aren't practising enough. b) You are looking at editorials too soon. c) You are solving easy problems again and again. Q. If I'm not practising enough, how much more should I practice ? 10 (Div2 D/Div 1 B, Div2 E/Div1 C) problems per day ? 20 problems per day ? 100 problems per day ? How much ? A. .........