← All problemsSign in

Tree Operations (Hard)

CodeChefRating 3447Open on judge ↗

**This is the hard version of the problem. The only difference is that here, $1 \le Q \le 2 \cdot 10^5$. This version is worth $100$ points in Division $1$ and unscoreable in other divisions.** You are given a tree with $N$ nodes, rooted at $1$. Each node $i$ has an associated non-negative integer value $A_i$. The **score of a tree** is defined as the minimum number of times you need to apply th

HINT LADDERno hints yet
L1 Observation
L2 Technique
L3 Approach
L4 Pseudo-code
🔒
L5 Full solution
L5 unlocks only if you insist twice
solution.cppC++17

CodeSearch Tutor

Hints, not spoilers — it won’t hand over the full solution unless you insist.

voice by Sarvam AI

Sign in to chat with the tutor and save your progress.

Sign in to start