【CodeForces】600 E. Lomsat gelral (dsu on tree)

【CodeForces】600 E. Lomsat gelral (dsu on tree)

树树dsuontree
【CodeForces】741 D. Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths（dsu on tree)

【CodeForces】741 D. Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths（dsu on tree)

树树dsuontree

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