Some Must Solve Problems for Recursion

After creating a list of DP problems on Atcoder (though a small list, here’s the link A Surprise for Everyone (UPDATED) - #29 by utkarsh1729), I thought why not have a list of problems on recursion on Atcoder (RECURSION the best friend of DP if not the fastest) because recursion is another topic that requires a lot of practice to develop that intuition and a sense of acceptance as to why it works. So here is the first problem that I am posting for this list and I request the community to post the links to some more problems on recursion from Atcoder ABC/ARC.

Here’s the list:-

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Oh. @hackxsaras I think you got it wrong. Actually this topic aims to create a list of problems on recursion from Atcoder ABC/ARC.

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Can anyone please post links to some more problems on recursion from Atcoder ABC/ARC?

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We need links to some more problems.

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only 1 problem?

Yes. The other link was kind of more popular, not much contribution here. Maybe you can add some problems. :slightly_smiling_face: