Task: Program Execution
Input (English): [-17, -66, 65, -20, 30, -63, 28, -86, 72, -41, -16, 21, -4, -55]
Output (English): [-41.5, -0.5, 22.5, 5.0, -16.5, -17.5, -29.0, -7.0, 15.5, -28.5, 2.5, 8.5, -29.5]