I believe the expected output in Example 3 should be 27, not 35. In fact, the sum in the last bullet point is 27.

Example 3:

• Input: arr = [7, 3, 8]
• Expected Output: 35
• Explanation:
  • The subarrays are: [7], [3], [8], [7,3], [3,8], [7,3,8].
  • The minimum values of these subarrays are: 7, 3, 8, 3, 3, 3.
  • Summing these minimums: 7 + 3 + 8 + 3 + 3 + 3 = 27.