Task: Program Execution
Input (English): [-15, -42, -77, 1, -39, 20, -15, 35, -73, 37, -95, -49, -39, -89, -100]
Output (English): [-28.5, -59.5, -38.0, -19.0, -9.5, 2.5, 10.0, -19.0, -18.0, -29.0, -72.0, -44.0, -64.0, -94.5]