Hi, have just (re-)started CP and almost always, the solution I think of is wrong at the end. I feel I have cracked the logic needed but some edge cases or logical errors appear at the end when I test my solution. If I pass the primary test cases, I fail at the hidden test cases. Things can't be this slow. Each question I solve takes about 1 hr of time. And I am talking about questions of rating 900-1000. I don't have so much time to waste. What should be my approach when I start practising the questions of a new rating level? Fck ratings, at least how to be efficient in my practice instead of draining time.

I have college placements in a few months :((