Task: Program Execution
Input (English): 6, ['3803', 'f', '9477', 'e', '4309', '1043', '8141', 'p', '5577', 'u', '397', 'O', '9395', 'x', 'q', 'W', 'y', 'K', '9421', 'S', 'v', '1067', '3931']
Output (English): 3803, 8141, 9395, 9421