{ "data": { "question": { "questionId": "1476", "questionFrontendId": "1351", "boundTopicId": null, "title": "Count Negative Numbers in a Sorted Matrix", "titleSlug": "count-negative-numbers-in-a-sorted-matrix", "content": "

Given a m x n matrix grid which is sorted in non-increasing order both row-wise and column-wise, return the number of negative numbers in grid.

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Example 1:

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\nInput: grid = [[4,3,2,-1],[3,2,1,-1],[1,1,-1,-2],[-1,-1,-2,-3]]\nOutput: 8\nExplanation: There are 8 negatives number in the matrix.\n
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Example 2:

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\nInput: grid = [[3,2],[1,0]]\nOutput: 0\n
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Constraints:

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Compiled with clang 11 using the latest C++ 17 standard.

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Most standard library headers are already included automatically for your convenience.

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Python 2.7.12.

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Most libraries are already imported automatically for your convenience, such as array, bisect, collections. If you need more libraries, you can import it yourself.

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For Map/TreeMap data structure, you may use sortedcontainers library.

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