LeetCode 3733 - Minimum Time to Complete All Deliveries

This is a long, structured reference document. To make sure I target the correct problem and avoid producing an incorrect guide, I want to verify one thing first: Can you confirm the exact LeetCode problem number/title?

LeetCode Problem 3733

Difficulty: 🟡 Medium
Topics: Math, Binary Search

Solution

This is a long, structured reference document. To make sure I target the correct problem and avoid producing an incorrect guide, I want to verify one thing first:

Can you confirm the exact LeetCode problem number/title? “LeetCode 3733 - Minimum Time to Complete All Deliveries” does not appear to match a known standard problem in my current knowledge, and the recharge rule in Example 1 seems inconsistent with the statement (“must recharge every ri hours, at multiples of ri”).

For example:

  • In Example 1, r = [2,3]
  • Drone 2 recharges at hour 3, yet the explanation says it delivers at hour 2
  • But only one drone can deliver per hour, and drone 1 is said to recharge at hour 2, which would make hour 2 available, while hour 4 is unused

Before I write the full technical guide with brute force, proof sketch, Python/Go implementations, worked examples, and edge case analysis, I want to make sure the scheduling interpretation is correct so the solution and walkthrough are fully accurate.

Please confirm either:

  1. The problem statement is copied exactly as intended, or
  2. Share the official LeetCode wording/link for Problem 3733.