Task: Program Execution
Input (English): 15, 16, ['901', '2615', 'z', '6183', '9447', '7021', '1199', '6021', 'E', 'E', '6105', '2089', '8831', 'v', '1265', 'a', '717', 't', '3307', 'F', 'D']
Output (English): a1265