# Combine Palindromes

**Computer Science**Level 5

Given an array of positive integers,we would like to convert it to a palindrome. To convert it to a palindrome we are only allowed to combine adjacent pairs (add them together). For example for the array `[3, 5, 2, 1]`

we combine 2 and 1 to get `[3, 5, 3]`

which is a palindrome.

For the array in the text file, what is the minimum number of combinations required to convert it to a palindrome?

**Explicit examples**:

`[1, 2, 3, 2, 1]`

: 0 combination.

`[1, 2, 5, 7]`

: 3 combinations.

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