Task: Program Execution
Input (English): [-1, 22, 43, 56, 35, -86, 5, 37, -29, -23, -20, 30, 20]
Output (English): [10.5, 32.5, 49.5, 45.5, -25.5, -40.5, 21.0, 4.0, -26.0, -21.5, 5.0, 25.0]