Task: Program Execution
Input (English): 17, 18, ['4437', 'n', 'h', 'W', 'O', '709', 'z', '5519', 'l', 'z', '6407', 'U', '7433', 'U', '4473', '4667', 'z', '7999', 'H', '8377', 'k', 't', '5491', '971', 'v', 'T']
Output (English): 7999