Task: Program Execution
Input (English): [-71, -8, -87, 82, 30, 43, -98, 21, -23, 44, -68, -63, -18]
Output (English): [-39.5, -47.5, -2.5, 56.0, 36.5, -27.5, -38.5, -1.0, 10.5, -12.0, -65.5, -40.5]