Task: Program Execution
Input (English): 20, 20, ['1607', '8005', '1737', 'j', 'H', 'm', '2563', 'x', '4403', '573', '5121', '2499', '4053', '6749', '3277', '3121', '6061', 'h', 'e', 'S', '4275', 'B', 'R', 'L', 'Q', 'P', '4939', '4965']
Output (English): S