I'm currently reading this blog in order to learn Dominator Tree:
https://tanujkhattar.wordpress.com/2016/01/11/dominator-tree-of-a-directed-graph/
And I don't understand what it means by "proper ancestor". Could somebody please explain this to me?
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Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
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