Task: Program Execution
Input (English): 4, ['w', '7871', '3163', '8713', '4607', 'j', '6231', 'L', '2917', '1951', 'a', '5063', '2133', 'O', 'P', '7057', '1977', '3137']
Output (English): w, 7871, 3163, 8713