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1058：Humble Numbers

题目描述
A number whose only prime factors are 2,3,5 or 7 is called a humble number. The sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 27, ... shows the first 20 humble numbers.

Write a program to find and print the nth element in this sequence
输入解释
The input consists of one or more test cases. Each test case consists of one integer n with 1 <= n <= 5842. Input is terminated by a value of zero (0) for n.
输出解释
For each test case, print one line saying "The nth humble number is number.". Depending on the value of n, the correct suffix "st", "nd", "rd", or "th" for the ordinal number nth has to be used like it is shown in the sample output.
输入样例 
1
2
3
4
11
12
13
21
22
23
100
1000
5842
0
输出样例 
The 1st humble number is 1.
The 2nd humble number is 2.
The 3rd humble number is 3.
The 4th humble number is 4.
The 11th humble number is 12.
The 12th humble number is 14.
The 13th humble number is 15.
The 21st humble number is 28.
The 22nd humble number is 30.
The 23rd humble number is 32.
The 100th humble number is 450.
The 1000th humble number is 385875.
The 5842nd humble number is 2000000000.
来自杭电HDUOJ的附加信息
Recommend JGShining
该题目是Virtual Judge题目，来自 杭电HDUOJ
题目来源 University of Ulm Local Contest 1996
源链接： HDU-1058
最后修改于 2020-10-25T22:41:48+00:00 由爬虫自动更新
共提交 7 次
通过率 14.29%
时间上限 内存上限
2000/1000MS(Java/Others) 65536/32768K(Java/Others)