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313. Super Ugly Number (Medium)

A super ugly number is a positive integer whose prime factors are in the array primes.

Given an integer n and an array of integers primes, return the nth super ugly number.

The nth super ugly number is guaranteed to fit in a 32-bit signed integer.

 

Example 1:

Input: n = 12, primes = [2,7,13,19]
Output: 32
Explanation: [1,2,4,7,8,13,14,16,19,26,28,32] is the sequence of the first 12 super ugly numbers given primes = [2,7,13,19].

Example 2:

Input: n = 1, primes = [2,3,5]
Output: 1
Explanation: 1 has no prime factors, therefore all of its prime factors are in the array primes = [2,3,5].

 

Constraints:

• 1 <= n <= 106
• 1 <= primes.length <= 100
• 2 <= primes[i] <= 1000
• primes[i] is guaranteed to be a prime number.
• All the values of primes are unique and sorted in ascending order.

Related Topics

[Array] [Hash Table] [Math] [Dynamic Programming] [Heap (Priority Queue)]

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