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Ugly Number III

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

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 <= 10^9
  • 1 <= a * b * c <= 1018
  • It is guaranteed that the result will be in range [1, 2 * 10^9].

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