Problems
Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence
1, 2, 3, 4, 5, 6, 8, 9, 10, 12, ...
shows the first 10 ugly numbers. By convention, 1 is included.
Given the integer n,write a program to find and print the n'th ugly number.
Input
Each line of the input contains a postisive integer n (n <= 1500). Input is terminated by a line with n=0.
Output
For each line, output the n’th ugly number. Don’t deal with the line with n=0.
Example
1
2
9
0
1
2
10
Tag
Source
New Zealand 1990 Division I,UVA 136 Ugly Numbers, poj 1338
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