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How to Solve Count Pairs of Connectable Servers in a Weighted Tree Network Problem
Master the Count Pairs of Connectable Servers in a Weighted Tree Network LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#3067
LeetCode ProblemCount Pairs of Connectable Servers in a Weighted Tree Network
You are given an unrooted weighted tree with n vertices representing servers numbered from 0 to n - 1, an array edges where edges[i] = [ai, bi, weighti] represents a bidirectional edge between vertices ai and bi of weight weighti. You are also given an integer signalSpeed. Two servers a and b are connectable through a server c if: Return an integer array count of length n where count[i] is the number of server pairs that are connectable through the server i.
ArrayTreeDepth-First Search
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Problem Breakdown
Understanding the Count Pairs of Connectable Servers in a Weighted Tree Network Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given an unrooted weighted tree with n vertices representing servers numbered from 0 to n - 1, an array edges where edges[i] = [ai, bi, weighti] represents a bidirectional edge between vertices ai and bi of weight weighti. You are also given an integer signalSpeed. Two servers a and b are connectable through a server c if: Return an integer array count of length n where count[i] is the number of server pairs that are connectable through the server i.
MediumProblem #3067
LeetCodeCount Pairs of Connectable Servers in a Weighted Tree Network
Related Topics
ArrayTreeDepth-First Search
How Phantom Code Helps
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Examples
# Example 1
Input
edges = [[0,1,1],[1,2,5],[2,3,13],[3,4,9],[4,5,2]], signalSpeed = 1
Output
[0,4,6,6,4,0]
# Example 2
Input
edges = [[0,6,3],[6,5,3],[0,3,1],[3,2,7],[3,1,6],[3,4,2]], signalSpeed = 3
Output
[2,0,0,0,0,0,2]
Constraints
2 <= n <= 1000
edges.length == n - 1
edges[i].length == 3
0 <= ai, bi < n
edges[i] = [ai, bi, weighti]
1 <= weighti <= 106
1 <= signalSpeed <= 106
The input is generated such that edges represents a valid tree.
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Solve Count Pairs of Connectable Servers in a Weighted Tree Network — You are given an unrooted weighted tree with n vertices representing servers num...
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Frequently Asked Questions
Common questions about solving Count Pairs of Connectable Servers in a Weighted Tree Network and using Phantom Code during coding interviews.
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Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
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What coding mistakes does Phantom Code help me avoid during Count Pairs of Connectable Servers in a Weighted Tree Network interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
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Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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