Each time, I faced a heavy implementation problems, even If I had the idea of the solution earlier, I just lost myself in the process of resolving, and look at the editorial many times. Every time, I missed a detail, and that took me sometimes 30 minutes without even remark it. Suddenly when I look at the editorial again, I say oh what the hell? and repeat the same process, again and again.

I am so slow on heavy implementation, and I know the common advice is to solve more implementation problems, but I am trying that and it's hard as described before. Did someone faced the same problem, and overcomed it? At least for implementation problems in range 1800 — 2000. If yes please give me advice, how should I trained this type of problems.

Also any tips to become quicker on resolving problems in general is welcome.