You are given a 0-indexed integer array nums, and an integer k.
In one operation, you will:
\n\nx and y in nums.x and y from nums.min(x, y) * 2 + max(x, y) anywhere in the array.Note that you can only apply the described operation if nums contains at least two elements.
Return the minimum number of operations needed so that all elements of the array are greater than or equal to k.
\n
Example 1:
\n\n\nInput: nums = [2,11,10,1,3], k = 10\nOutput: 2\nExplanation: In the first operation, we remove elements 1 and 2, then add 1 * 2 + 2 to nums. nums becomes equal to [4, 11, 10, 3].\nIn the second operation, we remove elements 3 and 4, then add 3 * 2 + 4 to nums. nums becomes equal to [10, 11, 10].\nAt this stage, all the elements of nums are greater than or equal to 10 so we can stop.\nIt can be shown that 2 is the minimum number of operations needed so that all elements of the array are greater than or equal to 10.\n\n\n
Example 2:
\n\n\nInput: nums = [1,1,2,4,9], k = 20\nOutput: 4\nExplanation: After one operation, nums becomes equal to [2, 4, 9, 3].\nAfter two operations, nums becomes equal to [7, 4, 9].\nAfter three operations, nums becomes equal to [15, 9].\nAfter four operations, nums becomes equal to [33].\nAt this stage, all the elements of nums are greater than 20 so we can stop.\nIt can be shown that 4 is the minimum number of operations needed so that all elements of the array are greater than or equal to 20.\n\n
\n
Constraints:
\n\n2 <= nums.length <= 2 * 1051 <= nums[i] <= 1091 <= k <= 109k.给你一个下标从 0 开始的整数数组 nums 和一个整数 k 。
一次操作中，你将执行：
\n\nnums 中最小的两个整数 x 和 y 。x 和 y 从 nums 中删除。min(x, y) * 2 + max(x, y) 添加到数组中的任意位置。注意，只有当 nums 至少包含两个元素时，你才可以执行以上操作。
你需要使数组中的所有元素都大于或等于 k ，请你返回需要的 最少 操作次数。
\n\n
示例 1：
\n\n\n输入：nums = [2,11,10,1,3], k = 10\n输出：2\n解释：第一次操作中，我们删除元素 1 和 2 ，然后添加 1 * 2 + 2 到 nums 中，nums 变为 [4, 11, 10, 3] 。\n第二次操作中，我们删除元素 3 和 4 ，然后添加 3 * 2 + 4 到 nums 中，nums 变为 [10, 11, 10] 。\n此时，数组中的所有元素都大于等于 10 ，所以我们停止操作。\n使数组中所有元素都大于等于 10 需要的最少操作次数为 2 。\n\n\n
示例 2：
\n\n\n输入：nums = [1,1,2,4,9], k = 20\n输出：4\n解释：第一次操作后，nums 变为 [2, 4, 9, 3] 。\n第二次操作后，nums 变为 [7, 4, 9] 。\n第三次操作后，nums 变为 [15, 9] 。\n第四次操作后，nums 变为 [33] 。\n此时，数组中的所有元素都大于等于 20 ，所以我们停止操作。\n使数组中所有元素都大于等于 20 需要的最少操作次数为 4 。\n\n
\n\n
提示：
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