{ "data": { "question": { "questionId": "3568", "questionFrontendId": "3270", "boundTopicId": null, "title": "Find the Key of the Numbers", "titleSlug": "find-the-key-of-the-numbers", "content": "

You are given three positive integers num1, num2, and num3.

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The key of num1, num2, and num3 is defined as a four-digit number such that:

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Return the key of the three numbers without leading zeros (if any).

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Example 1:

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Input: num1 = 1, num2 = 10, num3 = 1000

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Output: 0

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Explanation:

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On padding, num1 becomes "0001", num2 becomes "0010", and num3 remains "1000".

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Hence, the key is "0000", i.e. 0.

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Example 2:

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Input: num1 = 987, num2 = 879, num3 = 798

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Output: 777

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Example 3:

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Input: num1 = 1, num2 = 2, num3 = 3

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Output: 1

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Constraints:

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