Task: Program Execution
Input (English): 14, 15, ['6657', 'r', 'k', '3503', '8429', 'j', '5347', 's', '2559', 'I', '1907', '4607', 'u', 'S', 'a', 'e', 'x', '5465', '3631', '1845', 'i']
Output (English): S, a