Sorry for writing from a alter account . My rating is near 1960 and from past 11 contests i was able to solve problem C and D comfortably ,but problem A and B are taking more time and some times i just overthink the question,trying to optimise instead of a simple brute force or searching for a simple pattern or dividing the problem into few cases or heavy implementation and this is having a lot affect on me.For now i am not concerned about rating ,but could anybody help me how not to overthink a question,where a simple logic would be sufficient.