Hi, Codeforces community, I am new to the platform and want to know where should I post doubts for old problems. As I was solving graphs problems I came across some problem for which I was able to find a brute force solution but not the graph-based solution and their editorials have discussed the same brute force solution. So, where/Who should I ask for the graph-based solution because almost everywhere on the internet I can only come across the same brute force solution. Codeforces is warning me not to do necroposting on the old editorials so, I think posting doubts on that editorial is not a good idea.
I'm fixated on solving problems marked as graphs by using graphs, not brute force. So, I can develop my graphs as it is weak and to develop thinking how should graphs can be applied to various situations.
P.S: English is not my primary language. So, please go easy on my grammatical mistakes.