Task: Program Execution
Input (English): [18, -60, -63, -63, -55, 60, -1, -54, -79, -46, 47, 89, 87]
Output (English): [-21.0, -61.5, -63.0, -59.0, 2.5, 29.5, -27.5, -66.5, -62.5, 0.5, 68.0, 88.0]