Task: Program Execution
Input (English): 1, 4, ['5171', '5161', 'Y', 't', '5405', '9075', '9373', '445', '971', 'Y', '8523', '4009', '3131', '5241', 'P', 'q', 'r', '3717', 'w', 'g', '7661', 'n', 'P', 'D']
Output (English): tY51615171