Hi all, I have a quick question for the codeforces community.

I was wondering how you all got faster at solving problems in contests. See, I recently took the Div2 contest today and solved A to D with around 25 minutes to spare for problem E ( https://codeforces.net/problemset/problem/1200/E ). After reading the statement, I knew almost immediately it was a hashing problem and yet I was still unable to solve the problem in time despite the fact that many contestants solved it in a shorter amount of time.

I know that the simple answer to this question is that I should solve more problems. But I feel that there is something more, because I am able to identify the solution but not implement it in time. Any advice for training would be greatly appreciated.