Past INOI solutions discussion

INOI is approaching, and since not all problems have editorials, I think this would be a good place to discuss solutions.

Feel free to ask for hints/solution/solution code for inoi problems without editorials and I’ll try to answer them. You may also clarify syllabus related queries here.

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Do you know any simple topological sort problems? It’s there in the INOI syllabus, but it has never been asked.

You’ll find many here: Problem Topics - Codeforces (section topo)

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