Task: Program Execution
Input (English): 17, 19, ['2575', 'P', '1741', 'L', 'B', 'B', 'h', '3183', '2005', 'q', 's', 'r', '535', '9445', 'q', '6789', 'u', '1443', 'S', 'v', '681']
Output (English): S1443u