dp with dimensions n x n, where n is the length of the input string s.\n2. Fill the dp array with false values.\n3. Populate the dp array with true for all substrings that are palindromes.\n4. Iterate over all possible splits of the string into three parts.\n5. For each split, check if the left, middle, and right parts are palindromes using the dp array.\n6. If all three parts are palindromes, return true.\n7. If no valid split is found, return false.