Task: Program Execution
Input (English): 10, 10, ['8309', 'P', '1135', '3391', 'Z', 'G', '4755', 'f', '2061', '4111', '3005', '625', '2953', 'I', 'U', '1931', 'S', '8473', 'u']
Output (English): 4111