You are given an array of integers arr and an integer target.
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.
Return the minimum sum of the lengths of the two required sub-arrays, or return -1 if you cannot find such two sub-arrays.
\n
Example 1:
\n\n\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\n\n
Example 2:
\n\n\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\n\n
Example 3:
\n\n\nInput: arr = [4,3,2,6,2,3,4], target = 6\nOutput: -1\nExplanation: We have only one sub-array of sum = 6.\n\n\n
\n
Constraints:
\n\n1 <= arr.length <= 1051 <= arr[i] <= 10001 <= target <= 108给你一个整数数组 arr 和一个整数值 target 。
请你在 arr 中找 两个互不重叠的子数组 且它们的和都等于 target 。可能会有多种方案，请你返回满足要求的两个子数组长度和的 最小值 。
请返回满足要求的最小长度和，如果无法找到这样的两个子数组，请返回 -1 。
\n\n\n\n
示例 1：
\n\n输入：arr = [3,2,2,4,3], target = 3\n输出：2\n解释：只有两个子数组和为 3 （[3] 和 [3]）。它们的长度和为 2 。\n\n\n
示例 2：
\n\n输入：arr = [7,3,4,7], target = 7\n输出：2\n解释：尽管我们有 3 个互不重叠的子数组和为 7 （[7], [3,4] 和 [7]），但我们会选择第一个和第三个子数组，因为它们的长度和 2 是最小值。\n\n\n
示例 3：
\n\n输入：arr = [4,3,2,6,2,3,4], target = 6\n输出：-1\n解释：我们只有一个和为 6 的子数组。\n\n\n
示例 4：
\n\n输入：arr = [5,5,4,4,5], target = 3\n输出：-1\n解释：我们无法找到和为 3 的子数组。\n\n\n
示例 5：
\n\n输入：arr = [3,1,1,1,5,1,2,1], target = 3\n输出：3\n解释：注意子数组 [1,2] 和 [2,1] 不能成为一个方案因为它们重叠了。\n\n\n
\n\n
提示：
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collections<\\/a>\\u3002\\u5982\\u679c\\u60a8\\u9700\\u8981\\u4f7f\\u7528\\u5176\\u4ed6\\u5e93\\u51fd\\u6570\\uff0c\\u8bf7\\u81ea\\u884c\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n \\u6ce8\\u610f Python 2.7 \\u5c06\\u57282020\\u5e74\\u540e\\u4e0d\\u518d\\u7ef4\\u62a4<\\/a>\\u3002 \\u5982\\u60f3\\u4f7f\\u7528\\u6700\\u65b0\\u7248\\u7684Python\\uff0c\\u8bf7\\u9009\\u62e9Python 3\\u3002<\\/p>\"],\"c\":[\"C\",\" \\u7248\\u672c\\uff1a \\u7f16\\u8bd1\\u65f6\\uff0c\\u5c06\\u4f1a\\u91c7\\u7528 \\u4e3a\\u4e86\\u4f7f\\u7528\\u65b9\\u4fbf\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n \\u5982\\u60f3\\u4f7f\\u7528\\u54c8\\u5e0c\\u8868\\u8fd0\\u7b97, \\u60a8\\u53ef\\u4ee5\\u4f7f\\u7528 uthash<\\/a>\\u3002 \\\"uthash.h\\\"\\u5df2\\u7ecf\\u9ed8\\u8ba4\\u88ab\\u5bfc\\u5165\\u3002\\u8bf7\\u770b\\u5982\\u4e0b\\u793a\\u4f8b:<\\/p>\\r\\n\\r\\n 1. 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