[Codeforces Round # 620 (Div. 2)] E. 1-Trees and Queries (tree, LCA, parity) - Code World

[Codeforces Round # 620 (Div. 2)] E. 1-Trees and Queries (tree, LCA, parity)

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[Codeforces Round # 620 (Div. 2)] E. 1-Trees and Queries (tree, LCA, parity)

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