A little confusion

  • 0

    I want to say that the description is a little bit of confused.
    For example, [1,2,3,4,5]
    the answer is 6: [1,2,3][2,3,4][3,4,5][1,2,3,4][2,3,4,5][1,2,3,4,5]
    What about the [1,3,5] ?
    Do we allow to construct the array this way?

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