Task: Program Execution
Input (English): 13, 20, ['1643', '4717', '5969', '5965', '7477', 'Y', '3415', 'Q', 'U', 'N', '9481', 'o', '2575', '7025', 'n', 'P', '1123', '5753', 's', '797', 'L', '1627', 'x', 'Q', '7573', '7135', '8129', 'x']
Output (English): 797s35753211Pn52075752