Problem Solving

What to do when i can’t understand editorials of contest or any problem and how to approach backtracking type of problems

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.character quota.

Try to look for different submissions on that problem,
Also read the comments on editorial, that also helped a lot,
Or you can solve similar problems to get knowledge on that.

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First go through a standard book . Like LRCS … You will definitely be able to solve problems of any type with ease …Second is you need a lot practice