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If you have just started with coding and went on segment trees, then I’d say you are taking the wrong way. Move slowly and practise questions on everything you are learning. You may like reading this. Search previous forums on how should one start with competitive programming. That’ll be really helpful for you.
Please explain the Edit.
No, I’m not beginner, I am like, medium in coding. I know basic DS,algo.
Is there a way out?