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Problem: Path with Maximum Probability

Medium
30 min
Explore how to determine the path with the maximum success probability between two nodes in an undirected weighted graph. This lesson helps you understand graph representations, probability-based edge weights, and algorithms for finding optimal paths. Apply these concepts to solve real-world graph problems using Python.

Statement

You are given an undirected weighted graph of n nodes, represented by a 0-indexed list, edges, where edges[i] = [a, b] is an undirected edge connecting the nodes a and b. There is another list succProb, where succProb[i] is the probability of success of traversing the edge edges[i].

Additionally, you are given two nodes, start and end. Your task is to find the path with the maximum probability of success to go from start to end and return its success probability. If there is no path from start to end, return 0.

Constraints:

  • 22 \leq n 103\leq 10^3

  • 00 \leq start, end << n

  • start \neq end

  • 00 \leq a, b << n

  • a \neq b

  • 00 \leq succProb.length ==== edges.length 2×103\leq 2\times10^3

  • 00 \leq succProb[i] 1\leq 1

  • There is, at most, one edge between every two nodes.

Problem
Ask
Submissions

Problem: Path with Maximum Probability

Medium
30 min
Explore how to determine the path with the maximum success probability between two nodes in an undirected weighted graph. This lesson helps you understand graph representations, probability-based edge weights, and algorithms for finding optimal paths. Apply these concepts to solve real-world graph problems using Python.

Statement

You are given an undirected weighted graph of n nodes, represented by a 0-indexed list, edges, where edges[i] = [a, b] is an undirected edge connecting the nodes a and b. There is another list succProb, where succProb[i] is the probability of success of traversing the edge edges[i].

Additionally, you are given two nodes, start and end. Your task is to find the path with the maximum probability of success to go from start to end and return its success probability. If there is no path from start to end, return 0.

Constraints:

  • 22 \leq n 103\leq 10^3

  • 00 \leq start, end << n

  • start \neq end

  • 00 \leq a, b << n

  • a \neq b

  • 00 \leq succProb.length ==== edges.length 2×103\leq 2\times10^3

  • 00 \leq succProb[i] 1\leq 1

  • There is, at most, one edge between every two nodes.