689. Maximum Sum of 3 Non-Overlapping Subarrays

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Given an integer array nums and an integer k, find three non-overlapping subarrays of length k with maximum sum and return them. Return the result as a list of indices representing the starting position of each interval (0-indexed). If there are multiple answers, return the lexicographically smallest one. Example 1: Input: nums = [1,2,1,2,6,7,5,1], k = 2 Output: [0,3,5] Explanation: Subarrays

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solution.cppC++17

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