Task: Program Execution
Input (English): 9, ['Q', '9285', '6707', 'I', '2199', '3917', '8589', 'q', '5283', 'Y', '2419', '7813', 'x', 'O', 'I', '9359', 'l', '7323', '2947', '5839', '5433']
Output (English): Q, Y, 2947