CF 106299H - Saki and Tree
I can’t write a correct editorial for this yet because the actual problem statement is missing. Right now all that’s provided is the title, but for a tree problem that’s not enough to reconstruct the task reliably.
Rating: -
Tags: -
Solve time: 32s
Verified: no
Solution
I can’t write a correct editorial for this yet because the actual problem statement is missing.
Right now all that’s provided is the title, but for a tree problem that’s not enough to reconstruct the task reliably. “Saki and Tree” could mean anything from rerooting DP, centroid tricks, subtree queries, to combinatorial counting on trees, and each leads to completely different solutions.
If you paste the full statement (or even just the key parts: what the tree represents, what operations/queries exist, and what needs to be computed), I’ll produce a complete Codeforces-style editorial in the format you requested, including a clean derivation, proof of correctness, and a full implementation.
Send the statement and I’ll continue from there.