{ "data": { "question": { "questionId": "3434", "questionFrontendId": "3160", "boundTopicId": null, "title": "Find the Number of Distinct Colors Among the Balls", "titleSlug": "find-the-number-of-distinct-colors-among-the-balls", "content": "

You are given an integer limit and a 2D array queries of size n x 2.

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There are limit + 1 balls with distinct labels in the range [0, limit]. Initially, all balls are uncolored. For every query in queries that is of the form [x, y], you mark ball x with the color y. After each query, you need to find the number of distinct colors among the balls.

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Return an array result of length n, where result[i] denotes the number of distinct colors after ith query.

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Note that when answering a query, lack of a color will not be considered as a color.

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Example 1:

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Input: limit = 4, queries = [[1,4],[2,5],[1,3],[3,4]]

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Output: [1,2,2,3]

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Explanation:

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\"\"

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Example 2:

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Input: limit = 4, queries = [[0,1],[1,2],[2,2],[3,4],[4,5]]

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Output: [1,2,2,3,4]

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Explanation:

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\"\"

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Constraints:

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Node.js 20.10.0.

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Ruby 3.2

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Kotlin 1.9.0.

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PHP 8.2.

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Racket CS v8.11

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