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.lengthCompiled with clang 19 using the latest C++ 23 standard, and libstdc++ provided by GCC 14.
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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