首页 > 试题广场 >

Reversible Primes (20)

[编程题]Reversible Primes (20)
  • 热度指数：3174 时间限制：C/C++ 1秒，其他语言2秒 空间限制：C/C++ 32M，其他语言64M
  • 算法知识视频讲解
A reversible prime in any number system is a prime whose "reverse" in that number system is also a prime. For example in the decimal system 73 is a reversible prime because its reverse 37 is also a prime.

Now given any two positive integers N (< 105 ) and D (1 < D <= 10), you are supposed to tell if N is a reversible prime with radix D.

输入描述:
The input file consists of several test cases.  Each case occupies a line which contains two integers N and D.  The input is finished by a negative N.


输出描述:
For each test case, print in one line "Yes" if N is a reversible prime with radix D, or "No" if not.
示例1

输入

73 10<br/>23 2<br/>23 10<br/>-2

输出

Yes<br/>Yes<br/>No
算法知识视频讲解
开通博客

暂无题解

问题信息

难度：
12条回答 5585浏览

热门推荐

通过挑战的用户

相关试题

Reversible Primes (20)

扫一扫，把题目装进口袋

求职之前，先上牛客

扫描二维码，进入QQ群

扫描二维码，关注牛客公众号