You are given a 0-indexed integer array nums.
Initially, all of the indices are unmarked. You are allowed to make this operation any number of times:
\n\ni and j such that 2 * nums[i] <= nums[j], then mark i and j.Return the maximum possible number of marked indices in nums using the above operation any number of times.
\n
Example 1:
\n\n\nInput: nums = [3,5,2,4]\nOutput: 2\nExplanation: In the first operation: pick i = 2 and j = 1, the operation is allowed because 2 * nums[2] <= nums[1]. Then mark index 2 and 1.\nIt can be shown that there's no other valid operation so the answer is 2.\n\n\n
Example 2:
\n\n\nInput: nums = [9,2,5,4]\nOutput: 4\nExplanation: In the first operation: pick i = 3 and j = 0, the operation is allowed because 2 * nums[3] <= nums[0]. Then mark index 3 and 0.\nIn the second operation: pick i = 1 and j = 2, the operation is allowed because 2 * nums[1] <= nums[2]. Then mark index 1 and 2.\nSince there is no other operation, the answer is 4.\n\n\n
Example 3:
\n\n\nInput: nums = [7,6,8]\nOutput: 0\nExplanation: There is no valid operation to do, so the answer is 0.\n\n\n\n
\n
Constraints:
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