Task: Program Execution
Input (English): [56, 34, -61, -78, -69, 99, -53, -5, -77, 0, -51, -77, -68, -72, -26]
Output (English): [45.0, -13.5, -69.5, -73.5, 15.0, 23.0, -29.0, -41.0, -38.5, -25.5, -64.0, -72.5, -70.0, -49.0]