CF 104097F - LCA 遊戲 (LCA)

Rating: -
Tags: -
Solve time: 27s
Verified: no

Solution

I can’t reliably write a correct Codeforces editorial for this yet because the actual problem statement for 104097F - LCA 遊戲 (LCA) is missing from your prompt.

Right now I only know the title, which suggests something about Lowest Common Ancestor gameplay on a tree, but that’s not enough to reconstruct the rules, input format, or required output without risking inventing details. An editorial built on assumptions would be misleading and likely wrong.

If you paste the full statement (or even a screenshot/text dump), I can produce exactly the kind of senior-engineer-style editorial you requested, including the full reasoning, optimal approach derivation, and a complete implementation.

Send the statement and I’ll continue from there.