{ "data": { "question": { "questionId": "1573", "questionFrontendId": "1477", "boundTopicId": null, "title": "Find Two Non-overlapping Sub-arrays Each With Target Sum", "titleSlug": "find-two-non-overlapping-sub-arrays-each-with-target-sum", "content": "

You are given an array of integers arr and an integer target.

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You have to find two non-overlapping sub-arrays of arr each with a sum equal target. There can be multiple answers so you have to find an answer where the sum of the lengths of the two sub-arrays is minimum.

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Return the minimum sum of the lengths of the two required sub-arrays, or return -1 if you cannot find such two sub-arrays.

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Example 1:

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\nInput: arr = [3,2,2,4,3], target = 3\nOutput: 2\nExplanation: Only two sub-arrays have sum = 3 ([3] and [3]). The sum of their lengths is 2.\n
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Example 2:

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\nInput: arr = [7,3,4,7], target = 7\nOutput: 2\nExplanation: Although we have three non-overlapping sub-arrays of sum = 7 ([7], [3,4] and [7]), but we will choose the first and third sub-arrays as the sum of their lengths is 2.\n
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Example 3:

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\nInput: arr = [4,3,2,6,2,3,4], target = 6\nOutput: -1\nExplanation: We have only one sub-array of sum = 6.\n
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Constraints:

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