Task: Program Execution
Input (English): 5, 21, ['2709', '8235', '9703', 'I', '6391', 'H', '8711', '7651', '7843', '3149', 'B', '6489', 'h', '7525', '6799', 'i', 'b', 'M', 'Y', 's', 't', '4849']
Output (English): 6391H8711765178433149B6489h75256799ibMYst