Task: Program Execution
Input (English): 20, 21, ['D', 'B', 'j', '5971', '8339', '3269', '653', 'y', '8069', '6197', 'j', 's', '6143', 'G', 'i', '4857', 'O', '7781', 'Q', '3445', '5543', '1693', 'l', 'v', 'd', 'k']
Output (English): 55433445