Task: Program Execution
Input (English): 15, 19, ['6887', 'D', '6827', '179', '3945', 'U', '4833', 'g', '387', '6829', '6945', '2357', 'd', 'a', 'J', '3837', 't', 'A', 'd', 'F', '207', '4475']
Output (English): dAt3837J