You are given an integer array nums of length n and a 2D array queries where queries[i] = [li, ri].
Each queries[i] represents the following action on nums:
[li, ri] in nums by at most 1.A Zero Array is an array with all its elements equal to 0.
\n\nReturn the maximum number of elements that can be removed from queries, such that nums can still be converted to a zero array using the remaining queries. If it is not possible to convert nums to a zero array, return -1.
\n
Example 1:
\n\nInput: nums = [2,0,2], queries = [[0,2],[0,2],[1,1]]
\n\nOutput: 1
\n\nExplanation:
\n\nAfter removing queries[2], nums can still be converted to a zero array.
queries[0], decrement nums[0] and nums[2] by 1 and nums[1] by 0.queries[1], decrement nums[0] and nums[2] by 1 and nums[1] by 0.Example 2:
\n\nInput: nums = [1,1,1,1], queries = [[1,3],[0,2],[1,3],[1,2]]
\n\nOutput: 2
\n\nExplanation:
\n\nWe can remove queries[2] and queries[3].
Example 3:
\n\nInput: nums = [1,2,3,4], queries = [[0,3]]
\n\nOutput: -1
\n\nExplanation:
\n\nnums cannot be converted to a zero array even after using all the queries.
\n
Constraints:
\n\n1 <= nums.length <= 1050 <= nums[i] <= 1051 <= queries.length <= 105queries[i].length == 20 <= li <= ri < nums.length给你一个长度为 n 的整数数组 nums 和一个二维数组 queries ，其中 queries[i] = [li, ri] 。
每一个 queries[i] 表示对于 nums 的以下操作：
nums 中下标在范围 [li, ri] 之间的每一个元素 最多 减少 1 。零数组 指的是一个数组里所有元素都等于 0 。
\n\n请你返回 最多 可以从 queries 中删除多少个元素，使得 queries 中剩下的元素仍然能将 nums 变为一个 零数组 。如果无法将 nums 变为一个 零数组 ，返回 -1 。
\n\n
示例 1：
\n\n输入：nums = [2,0,2], queries = [[0,2],[0,2],[1,1]]
\n\n输出：1
\n\n解释：
\n\n删除 queries[2] 后，nums 仍然可以变为零数组。
queries[0] ，将 nums[0] 和 nums[2] 减少 1 ，将 nums[1] 减少 0 。queries[1] ，将 nums[0] 和 nums[2] 减少 1 ，将 nums[1] 减少 0 。示例 2：
\n\n输入：nums = [1,1,1,1], queries = [[1,3],[0,2],[1,3],[1,2]]
\n\n输出：2
\n\n解释：
\n\n可以删除 queries[2] 和 queries[3] 。
示例 3：
\n\n输入：nums = [1,2,3,4], queries = [[0,3]]
\n\n输出：-1
\n\n解释：
\n\nnums 无法通过 queries 变成零数组。
\n\n
提示：
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