← All problemsSign in

Finding a Centroid

CSESTree AlgorithmsOpen on judge ↗

Given a tree of n nodes, your task is to find a centroid, i.e., a node such that when it is appointed the root of the tree, each subtree has at most \lfloor n/2 \rfloor nodes. Input The first input line contains an integer n: the number of nodes. The nodes are numbered 1,2,…,n. Then there are n-1 lines describing the edges. Each line contains two integers a and b: there is an edge between nodes

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