Task: Program Execution
Input (English): 17, 18, ['1067', '9041', 'E', 'I', 'F', '2617', '4157', 'p', 'J', '5777', 'Y', 'i', '5015', '2363', '1049', 'A', '3819', 'd', '5003', 'A', 'v']
Output (English): 3819d