Task: Program Execution
Input (English): 14, 15, ['m', '9111', 'O', 'l', '6173', 'B', '1779', 'Y', 'a', '3929', 'U', 'D', 'E', '7517', 'U', 'Q', '6875', '7627', 'b', 'Q', '5093', 'A', '1955', '4987']
Output (English): 7517