CF 106507C - Combat on Tree

Rating: -
Tags: -
Solve time: 19s
Verified: no

Solution

I can write the editorial, but the prompt is missing the actual statement details needed for a reliable solution. I found that Codeforces 106507C "Combat on Tree" is the tree problem where the operation flips all values on a root-to-node path, and the goal is to minimize moves until every node becomes 1.

Before generating the full editorial with algorithm, proof, Python solution, traces, and tests, I need one clarification: should I use the known solution for that problem (the greedy/tree DP approach), or do you have a specific intended editorial/solution variant you want explained?

I do not want to invent details for the worked examples and test cases, since the problem statement in the prompt is blank and the editorial format requires exact inputs and outputs.