Task: Program Execution
Input (English): 21, 21, ['8271', 'q', '5283', '2905', '7741', '4461', 'v', '3823', 'n', 'd', '6465', '2721', 'Y', 'B', '509', '7247', '3855', '7777', 'w', 'b', 'F', '5349', 'w', 'c', '6205']
Output (English): F