Task: Program Execution
Input (English): 25, 25, ['8755', 'G', 'K', '8197', 'm', 'r', 'C', '8471', '6453', '4641', 'n', '1609', 'N', '5577', '2637', '999', '2889', '8509', '1617', 'w', 'f', 'D', 'K', 'z', 'b']
Output (English): b