Task: Program Execution
Input (English): [[-28, -57, -40, 7], [89, -99, 15, 30, 73], [-77, -32], [68, -80, -2, -97, -55, -50, 50, 60, 18]]
Output (English): [52, -268, -27, -60, 18, -50, 50, 60, 18]