Task: Program Execution
Input (English): [[20, -141], [-153, 62, 13, -129], [-197, 78, 14, -101], [40, -136, -81, -138], [-182, 84], [47, -184, -16], [5, -28, -3, -174, -139], [91, -121, -61, 55, 42]]
Output (English): [20, 62, 78, 40, 84, 47, 5, 91]