Task: Program Execution
Input (English): 15, 20, ['G', 'G', 'K', '8477', 'N', 'D', '3609', 'e', '861', 'l', '1535', 's', 'z', '2897', '8513', '5777', 'a', 'Z', '569', '4489']
Output (English): 4489569Za57778513