FastPrepMaximum Sum Among Longest Root-to-Leaf Paths

Maximum Sum Among Longest Root-to-Leaf Paths

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Problem statement

Given a nonempty binary tree, consider every path that starts at the root and ends at a leaf. The length of a path is its number of nodes, and its sum is the sum of those node values.

The problem statement continues
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Examples

Example 1

root = [1,2,3,4,null,5,6]return = 10

The longest paths contain three nodes. Their sums are 1 + 2 + 4 = 7, 1 + 3 + 5 = 9, and 1 + 3 + 6 = 10, so return 10.

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Reported in 1 Amazon interview this week

Unlock this recently reported problem

FastPrep Pro gives you full access to interview problems reported within the last week.

  • Full problem statement and constraints
  • 1 more worked example, explained
  • Guided hints and editorial
  • Run your code on real test cases
$8.25/month

$99 billed yearly — or $19 month-to-month. Cancel anytime.

Free plan — 2 of 2 free unlocks used this week