Problem B in Round #758 (Div.1 + Div. 2) using Topological Sort ? - Codeforces

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Problem B in Round #758 (Div.1 + Div. 2) using Topological Sort ?

Revision en2, by GlydonNeedsDedication, 2021-12-12 16:11:50

I saw this Solution of Problem B by maroonrk using Topological sort in contest Round #758 (Div.1 + Div. 2)
Can anybody explains the intuition please?

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query, discussion

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Revisions

	Rev.	Lang.	By	When	Δ	Comment
	en2		GlydonNeedsDedication	2021-12-12 16:11:50	9
	en1		GlydonNeedsDedication	2021-12-12 16:10:41	438	Initial revision (published)