Im recently struggling a lot with problems based on combinatorics. Can someone please share some good and useful resource for combinatorics? Will be really helpful.
Im finally able to break the newbie zone in last few of the rounds on CF..and I just want to share what really worked for me- and it is by giving virtual contests a lot. Yes giving virtual contests has increased my speed drastically during ongoing competitions and also solving just one question above your level is what I have done. So I really recommend people trying to break the newbie zone to try this it works..and I believe this method can even help to achieve much more higher ratings.