Maximum Points Obtain from Cards

There are several cards arranged in a row, and each card has an associated integer value. The goal is to pick the maximum number of cards from the deck such that the sum of their values is maximized. However, there is a catch: you can only pick a card from the beginning or the end of the row, and each time you pick a card, its value is subtracted from your total points.

Given an integer array cardPoints representing the card values and an integer k representing the number of cards you can pick, return the maximum points you can obtain.