Question: Implement a function that accepts a PositionalList L of n integers sorted in nondecreasing order, and another value V, and determines in O(n) time if

Implement a function that accepts a PositionalList L of n integers sorted in nondecreasing order, and another value V, and determines in O(n) time if there are two elements of L that sum precisely toV. The function should return a pair of positions of such elements, if found, or None otherwise.

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