Task: Program Execution
Input (English): 20, 21, ['h', '3409', '6131', '9607', 'J', '707', 'f', 'g', 'M', 'Z', 'a', '2765', '7261', '3321', '7467', '8869', '3365', '5649', 'W', '2609', 'O']
Output (English): 2609, O