Description

Given two integers Num1, Num2.

Please Write a C program to print out all the palindromic prime numbers between Num1 and Num2 (Included Num1 and Num2).

Input

Two integers Num1, Num2.

Note that:

1. Num2 is bigger than Num1. 
2. 32,767 >= Num2 > Num1 >= 0.

Output

Output should follow below format:

P1 P2 P3 P4 … Pn

Note:

1. Need to have a return value('\n') at the end of your string.
2. P1 ~ Pn are all palindromic prime numbers between Num1 and Num2.
3. P1 ~ Pn should be arranged in ascending power. That means, Pn > … > P4 > P3 > P2 > P1.
4. If there are no palindromic primes, print “None\n”.

Sample Input  Download

Sample Output  Download

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