1 solutions

  • -1
    @ 2024-9-29 19:57:55

    不难发现,5是没有用的 因此,只考虑2,3 当n = 0,1 无解 当n > 1,答案为 n / 2(n为偶数:2....2 n为奇数:2....3)

    • 1

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    ID
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