Task: Program Execution
Input (English): 13, 15, ['6429', 'd', '4359', '1815', '5429', '7139', '8761', 'W', '6903', '5957', 'Y', '6101', 'p', '2437', '7247', '5891', 'b', '3273', 'U', 'h', 'a', 'A', 't', 'V']
Output (English): 9684