Sum Multiples of Three, Five, or Seven
Company: Upstart
Role: Software Engineer
Category: Coding & Algorithms
Difficulty: medium
Interview Round: Online Assessment
Overview: Compute the sum of distinct positive integers below a limit that are divisible by three, five, or seven. Account for values shared by several divisor groups, strict limit boundaries, inputs up to 10^18, overflow-safe arithmetic, complexity, and generalized-divisor follow-ups.
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