Task: Program Execution
Input (English): 15, 16, ['J', 'x', '7741', 'L', '4145', '2393', '9993', 'j', 'r', '1863', '9579', 'r', 'k', '7077', 'W', '8405', '439', '7967', 'G', 'Q', 'Y', '7433']
Output (English): 8405W