An ugly number is a positive integer that is divisible by `a`, `b`, or `c`.

Given four integers `n`, `a`, `b`, and `c`, return the `nth` ugly number.

Example 1:

    Input: n = 3, a = 2, b = 3, c = 5
    Output: 4
    Explanation: The ugly numbers are 2, 3, 4, 5, 6, 8, 9, 10... The 3rd is 4.

Example 2:

    Input: n = 4, a = 2, b = 3, c = 4
    Output: 6
    Explanation: The ugly numbers are 2, 3, 4, 6, 8, 9, 10, 12... The 4th is 6.

Example 3:

    Input: n = 5, a = 2, b = 11, c = 13
    Output: 10
    Explanation: The ugly numbers are 2, 4, 6, 8, 10, 11, 12, 13... The 5th is 10.

Constraints:

- `1 <= n, a, b, c <= 109`
- `1 <= a * b * c <= 1018`
- It is guaranteed that the result will be in range `[1, 2 * 109]`.