Given an integer `num`, return three consecutive integers (as a sorted array) that sum to `num`. If `num` cannot be expressed as the sum of three consecutive integers, return an empty array.

Example 1:

    Input: num = 33
    Output: [10,11,12]
    Explanation: 33 can be expressed as 10 + 11 + 12 = 33.
    10, 11, 12 are 3 consecutive integers, so we return [10, 11, 12].

Example 2:

    Input: num = 4
    Output: []
    Explanation: There is no way to express 4 as the sum of 3 consecutive integers.

Constraints:

- `0 <= num <= 1015`