Task: Program Execution
Input (English): [31, -56, 26, -69, 42, 51, -45, 47, -51, 58, -81, 64, -33]
Output (English): [-12.5, -15.0, -21.5, -13.5, 46.5, 3.0, 1.0, -2.0, 3.5, -11.5, -8.5, 15.5]