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OA2026-08-13

Given an empty array and a series of queries, count unique triplets

AI-Expanded — inferred from the question title, not from the original candidate report

Given an initially empty array, you are provided with a sequence of queries where each query adds a new integer to the array. After each insertion, calculate the total number of unique triplets (i, j, k) such that i < j < k and the sum of the elements at these indices equals a target value.

Context & Summary

Online Assessment Round

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