Task: Program Execution
Input (English): 16, 17, ['3491', 'k', 'j', 'P', '53', '8193', 'g', '6089', '9757', 'm', '3975', 'x', 'u', '5295', '2623', 'B', 'y', 'C', 'l', 'y', '5781']
Output (English): yB