What to do when you understand and solve a tricky question by reading editorial but after sometime when you come across the same question, you are not able to solve it !!.
I am sure that this happens with many people as some of my friends have also reported this. Now i want a solution to this problem.
Whats the best way to revise these problems. Ofcourse i can same them somewhere along with my approach but if i keep saving question like this, there will be hundreds of them.
Not sure whats the correct way. Would love to see some suggestions.