Hello All , I have been here for quite some time and have been participating in contests too.But i always end up solving max 2 or 1 or none in Codeforces Div 2.I don't have quite the exposure as to how to get better in these competitions and improve my knowledge in algorithms etc.I am trying my best to read the editorials and the terms they use like trees etc.But i am not getting the grip on that. If any of you could help me in suggesting the resources I would be very glad. Thanks!