Ugly Number III
Write a program to find the n-th ugly number.
Ugly numbers are positive numbers that are divisible by either a, b, or c.
Since the number can be too large, return the actual answer modulo 10^9 + 7
Example 1:
Input:n = 10, a = 2, b = 3, c = 5
Output: 14
Explanation: 2, 3, 4, 5, 6, 8, 9, 10, 12, 14 is the sequence of the first 10 ugly numbers.
Example 2:
Input:n = 2, a = 3, b = 4, c = 5
Output: 4
Explanation: 3, 4 is the sequence of the first 2 ugly numbers.
Constraints
1 <= n, a, b, c <= 10^91 <= a * b * c <= 10^18
Try it yourself
Solution
Title
Script
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
Contrary to popular belief, Lorem Ipsum is not simply random text.
1 >>> a = [1, 2, 3] 2 >>> a[-1] 3 3