DWITE Online Computer Programming Contest
The number 181 is a prime palindrome because it is both a prime number and a palindrome. A palindrome is a number that is the same when read forward as backward. Write a program that determines how many prime palindromes there are between two numbers.
The input will contain five sets of data. Each set will contain two integers, L and U, the range of numbers to determine the prime palindromes. 2 ≤ L ≤ U ≤ 999,999.
The output will contain the number of prime palindromes between L and U, inclusive.
Sample Input (3 sets of data only)
2 10 100 200 10000 20000
4 5 26
Point Value: 10
Time Limit: 1.00s
Memory Limit: 16M
Added: Nov 13, 2008
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