Task: Program Execution
Input (English): 17, 18, ['723', 'Y', '3101', 'c', '6859', '4071', 'g', 'r', '7627', '5645', 'U', 'A', '9641', '4263', '7759', '8795', 'i', '4729', 'r', 'U', 'D', 'P']
Output (English): 4729