D. Harmonious Graph (Codeforces Round # 600 (Div. 2)) (disjoint-set thinking +) - Code World

D. Harmonious Graph (Codeforces Round # 600 (Div. 2)) (disjoint-set thinking +)

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D. Harmonious Graph (Codeforces Round # 600 (Div. 2)) (disjoint-set thinking +)

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