Given an integer array arr, return the number of distinct bitwise ORs of all the non-empty subarrays of arr.
The bitwise OR of a subarray is the bitwise OR of each integer in the subarray. The bitwise OR of a subarray of one integer is that integer.
\n\nA subarray is a contiguous non-empty sequence of elements within an array.
\n\n\n
Example 1:
\n\n\nInput: arr = [0]\nOutput: 1\nExplanation: There is only one possible result: 0.\n\n\n
Example 2:
\n\n\nInput: arr = [1,1,2]\nOutput: 3\nExplanation: The possible subarrays are [1], [1], [2], [1, 1], [1, 2], [1, 1, 2].\nThese yield the results 1, 1, 2, 1, 3, 3.\nThere are 3 unique values, so the answer is 3.\n\n\n
Example 3:
\n\n\nInput: arr = [1,2,4]\nOutput: 6\nExplanation: The possible results are 1, 2, 3, 4, 6, and 7.\n\n\n
\n
Constraints:
\n\n1 <= arr.length <= 5 * 1040 <= arr[i] <= 109Compiled with clang 11 using the latest C++ 20 standard.
Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.
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