Even Odd Partition

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Let $f(n)$ be the number of ways to partition the array $[1, 2, 3, \ldots, n]$ into contiguous subarrays such that every pair of adjacent subarrays in the partition have sums of different parity. What is a contiguous subarray? A contiguous subarray of an array $A$ is an array that can be obtained by deleting some (possibly none) elements from the front of $A$ and some (possibly none) elements fro

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solution.cppC++17

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