Task: Program Execution
Input (English): 5, ['1969', '9085', '6009', '9299', '8983', '3309', 'P', '1957', '2579', 'h', 'J', '4505', '5289', 'l', '5803', 'I', '6481', '9757']
Output (English): 1969, 3309, J, I