You are given a 0-indexed integer array nums. In one operation, you can:
i and j such that 0 <= i, j < nums.length.k such that the kth bit (0-indexed) in the binary representation of nums[i] and nums[j] is 1.2k from nums[i] and nums[j].A subarray is beautiful if it is possible to make all of its elements equal to 0 after applying the above operation any number of times.
Return the number of beautiful subarrays in the array nums.
A subarray is a contiguous non-empty sequence of elements within an array.
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Example 1:
\n\n\nInput: nums = [4,3,1,2,4]\nOutput: 2\nExplanation: There are 2 beautiful subarrays in nums: [4,3,1,2,4] and [4,3,1,2,4].\n- We can make all elements in the subarray [3,1,2] equal to 0 in the following way:\n - Choose [3, 1, 2] and k = 1. Subtract 21 from both numbers. The subarray becomes [1, 1, 0].\n - Choose [1, 1, 0] and k = 0. Subtract 20 from both numbers. The subarray becomes [0, 0, 0].\n- We can make all elements in the subarray [4,3,1,2,4] equal to 0 in the following way:\n - Choose [4, 3, 1, 2, 4] and k = 2. Subtract 22 from both numbers. The subarray becomes [0, 3, 1, 2, 0].\n - Choose [0, 3, 1, 2, 0] and k = 0. Subtract 20 from both numbers. The subarray becomes [0, 2, 0, 2, 0].\n - Choose [0, 2, 0, 2, 0] and k = 1. Subtract 21 from both numbers. The subarray becomes [0, 0, 0, 0, 0].\n\n\n
Example 2:
\n\n\nInput: nums = [1,10,4]\nOutput: 0\nExplanation: There are no beautiful subarrays in nums.\n\n\n
\n
Constraints:
\n\n1 <= nums.length <= 1050 <= nums[i] <= 106给你一个下标从 0 开始的整数数组nums 。每次操作中，你可以：
0 <= i, j < nums.length 的不同下标 i 和 j 。k ，满足 nums[i] 和 nums[j] 在二进制下的第 k 位（下标编号从 0 开始）是 1 。nums[i] 和 nums[j] 都减去 2k 。如果一个子数组内执行上述操作若干次后，该子数组可以变成一个全为 0 的数组，那么我们称它是一个 美丽 的子数组。
请你返回数组 nums 中 美丽子数组 的数目。
子数组是一个数组中一段连续 非空 的元素序列。
\n\n\n\n
示例 1：
\n\n\n输入：nums = [4,3,1,2,4]\n输出：2\n解释：nums 中有 2 个美丽子数组：[4,3,1,2,4] 和 [4,3,1,2,4] 。\n- 按照下述步骤，我们可以将子数组 [3,1,2] 中所有元素变成 0 ：\n - 选择 [3, 1, 2] 和 k = 1 。将 2 个数字都减去 21 ，子数组变成 [1, 1, 0] 。\n - 选择 [1, 1, 0] 和 k = 0 。将 2 个数字都减去 20 ，子数组变成 [0, 0, 0] 。\n- 按照下述步骤，我们可以将子数组 [4,3,1,2,4] 中所有元素变成 0 ：\n - 选择 [4, 3, 1, 2, 4] 和 k = 2 。将 2 个数字都减去 22 ，子数组变成 [0, 3, 1, 2, 0] 。\n - 选择 [0, 3, 1, 2, 0] 和 k = 0 。将 2 个数字都减去 20 ，子数组变成 [0, 2, 0, 2, 0] 。\n - 选择 [0, 2, 0, 2, 0] 和 k = 1 。将 2 个数字都减去 21 ，子数组变成 [0, 0, 0, 0, 0] 。\n\n\n
示例 2：
\n\n\n输入：nums = [1,10,4]\n输出：0\n解释：nums 中没有任何美丽子数组。\n\n\n
\n\n
提示：
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