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Problem
Given an array of N integers (1 ≤ N ≤ 12), count the number of ways to partition it into subarrays where each subarray is a palindrome.
Input format
Input
input.txt
- The first line contains integer N - The second line contains N integers
Output format
Output
output.txt
- The number of palindromic partitions
Example
input
3 1 2 1
output
2
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Sample cases (from the problem)
Sample Case 1
Input
3 1 2 1
Expected output
2
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